diff --git a/substrate/Cargo.lock b/substrate/Cargo.lock
index 86744c2537..8a620ab5c2 100644
--- a/substrate/Cargo.lock
+++ b/substrate/Cargo.lock
@@ -4759,9 +4759,9 @@ dependencies = [
 
 [[package]]
 name = "parity-scale-codec"
-version = "1.3.0"
+version = "1.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "329c8f7f4244ddb5c37c103641027a76c530e65e8e4b8240b29f81ea40508b17"
+checksum = "a74f02beb35d47e0706155c9eac554b50c671e0d868fe8296bcdf44a9a4847bf"
 dependencies = [
  "arrayvec 0.5.1",
  "bitvec",
diff --git a/substrate/bin/node-template/pallets/template/Cargo.toml b/substrate/bin/node-template/pallets/template/Cargo.toml
index 6b99b6f807..714c9d93a9 100644
--- a/substrate/bin/node-template/pallets/template/Cargo.toml
+++ b/substrate/bin/node-template/pallets/template/Cargo.toml
@@ -12,7 +12,7 @@ description = "FRAME pallet template"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 
 [dependencies.frame-support]
 default-features = false
diff --git a/substrate/bin/node-template/runtime/Cargo.toml b/substrate/bin/node-template/runtime/Cargo.toml
index 9042edc8fa..16bb0fe0cb 100644
--- a/substrate/bin/node-template/runtime/Cargo.toml
+++ b/substrate/bin/node-template/runtime/Cargo.toml
@@ -11,7 +11,7 @@ repository = "https://github.com/paritytech/substrate/"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 
 aura = { version = "2.0.0-rc3", default-features = false, package = "pallet-aura", path = "../../../frame/aura" }
 balances = { version = "2.0.0-rc3", default-features = false, package = "pallet-balances", path = "../../../frame/balances" }
diff --git a/substrate/bin/node/cli/Cargo.toml b/substrate/bin/node/cli/Cargo.toml
index 74edf2f257..4e2c0151b7 100644
--- a/substrate/bin/node/cli/Cargo.toml
+++ b/substrate/bin/node/cli/Cargo.toml
@@ -34,7 +34,7 @@ crate-type = ["cdylib", "rlib"]
 
 [dependencies]
 # third-party dependencies
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 serde = { version = "1.0.102", features = ["derive"] }
 futures = { version = "0.3.1", features = ["compat"] }
 hex-literal = "0.2.1"
diff --git a/substrate/bin/node/executor/Cargo.toml b/substrate/bin/node/executor/Cargo.toml
index 64799129fc..2c5a5db281 100644
--- a/substrate/bin/node/executor/Cargo.toml
+++ b/substrate/bin/node/executor/Cargo.toml
@@ -12,7 +12,7 @@ repository = "https://github.com/paritytech/substrate/"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 node-primitives = { version = "2.0.0-rc3", path = "../primitives" }
 node-runtime = { version = "2.0.0-rc3", path = "../runtime" }
 sc-executor = { version = "0.8.0-rc3", path = "../../../client/executor" }
diff --git a/substrate/bin/node/inspect/Cargo.toml b/substrate/bin/node/inspect/Cargo.toml
index 1c2f316b40..91202191f1 100644
--- a/substrate/bin/node/inspect/Cargo.toml
+++ b/substrate/bin/node/inspect/Cargo.toml
@@ -11,7 +11,7 @@ repository = "https://github.com/paritytech/substrate/"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 derive_more = "0.99"
 log = "0.4.8"
 sc-cli = { version = "0.8.0-rc3", path = "../../../client/cli" }
diff --git a/substrate/bin/node/primitives/Cargo.toml b/substrate/bin/node/primitives/Cargo.toml
index ec8d58fe27..75a8cbb332 100644
--- a/substrate/bin/node/primitives/Cargo.toml
+++ b/substrate/bin/node/primitives/Cargo.toml
@@ -11,7 +11,7 @@ repository = "https://github.com/paritytech/substrate/"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 frame-system = { version = "2.0.0-rc3", default-features = false, path = "../../../frame/system" }
 sp-application-crypto = { version = "2.0.0-rc3", default-features = false, path = "../../../primitives/application-crypto" }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../../../primitives/core" }
diff --git a/substrate/bin/node/runtime/Cargo.toml b/substrate/bin/node/runtime/Cargo.toml
index 7cc4018fb6..b26b53cd6c 100644
--- a/substrate/bin/node/runtime/Cargo.toml
+++ b/substrate/bin/node/runtime/Cargo.toml
@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 
 # third-party dependencies
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 integer-sqrt = { version = "0.1.2" }
 serde = { version = "1.0.102", optional = true }
 static_assertions = "1.1.0"
diff --git a/substrate/bin/node/testing/Cargo.toml b/substrate/bin/node/testing/Cargo.toml
index f423c58fe6..6bf4abc03d 100644
--- a/substrate/bin/node/testing/Cargo.toml
+++ b/substrate/bin/node/testing/Cargo.toml
@@ -17,7 +17,7 @@ pallet-balances = { version = "2.0.0-rc3", path = "../../../frame/balances" }
 sc-service = { version = "0.8.0-rc3", features = ["test-helpers", "db"],  path = "../../../client/service" }
 sc-client-db = { version = "0.8.0-rc3", path = "../../../client/db/", features = ["kvdb-rocksdb", "parity-db"] }
 sc-client-api = { version = "2.0.0-rc3", path = "../../../client/api/" }
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 pallet-contracts = { version = "2.0.0-rc3", path = "../../../frame/contracts" }
 pallet-grandpa = { version = "2.0.0-rc3", path = "../../../frame/grandpa" }
 pallet-indices = { version = "2.0.0-rc3", path = "../../../frame/indices" }
diff --git a/substrate/bin/utils/subkey/Cargo.toml b/substrate/bin/utils/subkey/Cargo.toml
index 064470ea7c..fa570f5759 100644
--- a/substrate/bin/utils/subkey/Cargo.toml
+++ b/substrate/bin/utils/subkey/Cargo.toml
@@ -22,7 +22,7 @@ tiny-bip39 = "0.7"
 substrate-bip39 = "0.4.1"
 hex = "0.4.0"
 hex-literal = "0.2.1"
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 frame-system = { version = "2.0.0-rc3", path = "../../../frame/system" }
 pallet-balances = { version = "2.0.0-rc3", path = "../../../frame/balances" }
 pallet-transaction-payment = { version = "2.0.0-rc3", path = "../../../frame/transaction-payment" }
diff --git a/substrate/client/api/Cargo.toml b/substrate/client/api/Cargo.toml
index 7730168136..606c1c4813 100644
--- a/substrate/client/api/Cargo.toml
+++ b/substrate/client/api/Cargo.toml
@@ -13,7 +13,7 @@ documentation = "https://docs.rs/sc-client-api"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-consensus = { version = "0.8.0-rc3", path = "../../primitives/consensus/common" }
 derive_more = { version = "0.99.2" }
 sc-executor = { version = "0.8.0-rc3", path = "../executor" }
diff --git a/substrate/client/authority-discovery/Cargo.toml b/substrate/client/authority-discovery/Cargo.toml
index 8833306f06..114092ab31 100644
--- a/substrate/client/authority-discovery/Cargo.toml
+++ b/substrate/client/authority-discovery/Cargo.toml
@@ -17,7 +17,7 @@ prost-build = "0.6.1"
 
 [dependencies]
 bytes = "0.5.0"
-codec = { package = "parity-scale-codec", default-features = false, version = "1.3.0" }
+codec = { package = "parity-scale-codec", default-features = false, version = "1.3.1" }
 derive_more = "0.99.2"
 futures = "0.3.4"
 futures-timer = "3.0.1"
diff --git a/substrate/client/basic-authorship/Cargo.toml b/substrate/client/basic-authorship/Cargo.toml
index 964d1c3798..6e3ec49ea7 100644
--- a/substrate/client/basic-authorship/Cargo.toml
+++ b/substrate/client/basic-authorship/Cargo.toml
@@ -12,7 +12,7 @@ description = "Basic implementation of block-authoring logic."
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 futures = "0.3.4"
 futures-timer = "3.0.1"
 log = "0.4.8"
diff --git a/substrate/client/block-builder/Cargo.toml b/substrate/client/block-builder/Cargo.toml
index ff142887ff..ce94526e0c 100644
--- a/substrate/client/block-builder/Cargo.toml
+++ b/substrate/client/block-builder/Cargo.toml
@@ -21,7 +21,7 @@ sp-blockchain = { version = "2.0.0-rc3", path = "../../primitives/blockchain" }
 sp-core = { version = "2.0.0-rc3", path = "../../primitives/core" }
 sp-block-builder = { version = "2.0.0-rc3", path = "../../primitives/block-builder" }
 sc-client-api = { version = "2.0.0-rc3", path = "../api" }
-codec = { package = "parity-scale-codec", version = "1.3.0", features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", features = ["derive"] }
 
 [dev-dependencies]
 substrate-test-runtime-client = { path = "../../test-utils/runtime/client" }
diff --git a/substrate/client/consensus/aura/Cargo.toml b/substrate/client/consensus/aura/Cargo.toml
index 1cb1c4657b..04bdc19fe4 100644
--- a/substrate/client/consensus/aura/Cargo.toml
+++ b/substrate/client/consensus/aura/Cargo.toml
@@ -17,7 +17,7 @@ sp-consensus-aura = { version = "0.8.0-rc3", path = "../../../primitives/consens
 sp-block-builder = { version = "2.0.0-rc3", path = "../../../primitives/block-builder" }
 sc-block-builder = { version = "0.8.0-rc3", path = "../../../client/block-builder" }
 sc-client-api = { version = "2.0.0-rc3", path = "../../api" }
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 sp-consensus = { version = "0.8.0-rc3", path = "../../../primitives/consensus/common" }
 derive_more = "0.99.2"
 futures = "0.3.4"
diff --git a/substrate/client/consensus/babe/Cargo.toml b/substrate/client/consensus/babe/Cargo.toml
index cf4e32a94c..4f8f4db264 100644
--- a/substrate/client/consensus/babe/Cargo.toml
+++ b/substrate/client/consensus/babe/Cargo.toml
@@ -13,7 +13,7 @@ documentation = "https://docs.rs/sc-consensus-babe"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", features = ["derive"] }
 sp-consensus-babe = { version = "0.8.0-rc3", path = "../../../primitives/consensus/babe" }
 sp-core = { version = "2.0.0-rc3", path = "../../../primitives/core" }
 sp-application-crypto = { version = "2.0.0-rc3", path = "../../../primitives/application-crypto" }
diff --git a/substrate/client/consensus/epochs/Cargo.toml b/substrate/client/consensus/epochs/Cargo.toml
index c1c47a1a68..3911a59b72 100644
--- a/substrate/client/consensus/epochs/Cargo.toml
+++ b/substrate/client/consensus/epochs/Cargo.toml
@@ -12,7 +12,7 @@ repository = "https://github.com/paritytech/substrate/"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", features = ["derive"] }
 parking_lot = "0.10.0"
 fork-tree = { version = "2.0.0-rc3", path = "../../../utils/fork-tree" }
 sp-runtime = {  path = "../../../primitives/runtime" , version = "2.0.0-rc3"}
diff --git a/substrate/client/consensus/pow/Cargo.toml b/substrate/client/consensus/pow/Cargo.toml
index b48f54a325..cd8d4cab42 100644
--- a/substrate/client/consensus/pow/Cargo.toml
+++ b/substrate/client/consensus/pow/Cargo.toml
@@ -12,7 +12,7 @@ repository = "https://github.com/paritytech/substrate/"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", features = ["derive"] }
 sp-core = { version = "2.0.0-rc3", path = "../../../primitives/core" }
 sp-blockchain = { version = "2.0.0-rc3", path = "../../../primitives/blockchain" }
 sp-runtime = { version = "2.0.0-rc3", path = "../../../primitives/runtime" }
diff --git a/substrate/client/consensus/slots/Cargo.toml b/substrate/client/consensus/slots/Cargo.toml
index dae0a924b7..25a137d214 100644
--- a/substrate/client/consensus/slots/Cargo.toml
+++ b/substrate/client/consensus/slots/Cargo.toml
@@ -13,7 +13,7 @@ repository = "https://github.com/paritytech/substrate/"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 sc-client-api = { version = "2.0.0-rc3", path = "../../api" }
 sp-core = { version = "2.0.0-rc3", path = "../../../primitives/core" }
 sp-application-crypto = { version = "2.0.0-rc3", path = "../../../primitives/application-crypto" }
diff --git a/substrate/client/db/Cargo.toml b/substrate/client/db/Cargo.toml
index d9fcdf7f6a..22ca6e64aa 100644
--- a/substrate/client/db/Cargo.toml
+++ b/substrate/client/db/Cargo.toml
@@ -20,7 +20,7 @@ kvdb-memorydb = "0.6.0"
 linked-hash-map = "0.5.2"
 hash-db = "0.15.2"
 parity-util-mem = { version = "0.6.1", default-features = false, features = ["std"] }
-codec = { package = "parity-scale-codec", version = "1.3.0", features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", features = ["derive"] }
 blake2-rfc = "0.2.18"
 
 sc-client-api = { version = "2.0.0-rc3", path = "../api" }
diff --git a/substrate/client/executor/Cargo.toml b/substrate/client/executor/Cargo.toml
index 96d2d9eb94..f1499693f3 100644
--- a/substrate/client/executor/Cargo.toml
+++ b/substrate/client/executor/Cargo.toml
@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 derive_more = "0.99.2"
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 sp-io = { version = "2.0.0-rc3", path = "../../primitives/io" }
 sp-core = { version = "2.0.0-rc3", path = "../../primitives/core" }
 sp-trie = { version = "2.0.0-rc3", path = "../../primitives/trie" }
diff --git a/substrate/client/executor/common/Cargo.toml b/substrate/client/executor/common/Cargo.toml
index e9d2586e36..a6ff79a067 100644
--- a/substrate/client/executor/common/Cargo.toml
+++ b/substrate/client/executor/common/Cargo.toml
@@ -16,7 +16,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 log = "0.4.8"
 derive_more = "0.99.2"
 parity-wasm = "0.41.0"
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 wasmi = "0.6.2"
 sp-core = { version = "2.0.0-rc3", path = "../../../primitives/core" }
 sp-allocator = { version = "2.0.0-rc3", path = "../../../primitives/allocator" }
diff --git a/substrate/client/executor/wasmi/Cargo.toml b/substrate/client/executor/wasmi/Cargo.toml
index 94f28f744b..f3c2ee2c67 100644
--- a/substrate/client/executor/wasmi/Cargo.toml
+++ b/substrate/client/executor/wasmi/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 log = "0.4.8"
 wasmi = "0.6.2"
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 sc-executor-common = { version = "0.8.0-rc3", path = "../common" }
 sp-wasm-interface = { version = "2.0.0-rc3", path = "../../../primitives/wasm-interface" }
 sp-runtime-interface = { version = "2.0.0-rc3", path = "../../../primitives/runtime-interface" }
diff --git a/substrate/client/executor/wasmtime/Cargo.toml b/substrate/client/executor/wasmtime/Cargo.toml
index 730bc74932..6d008bcee6 100644
--- a/substrate/client/executor/wasmtime/Cargo.toml
+++ b/substrate/client/executor/wasmtime/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 log = "0.4.8"
 scoped-tls = "1.0"
 parity-wasm = "0.41.0"
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 sc-executor-common = { version = "0.8.0-rc3", path = "../common" }
 sp-wasm-interface = { version = "2.0.0-rc3", path = "../../../primitives/wasm-interface" }
 sp-runtime-interface = { version = "2.0.0-rc3", path = "../../../primitives/runtime-interface" }
diff --git a/substrate/client/finality-grandpa/Cargo.toml b/substrate/client/finality-grandpa/Cargo.toml
index d101fe66d0..29b9cdaeba 100644
--- a/substrate/client/finality-grandpa/Cargo.toml
+++ b/substrate/client/finality-grandpa/Cargo.toml
@@ -22,7 +22,7 @@ log = "0.4.8"
 parking_lot = "0.10.0"
 rand = "0.7.2"
 assert_matches = "1.3.0"
-parity-scale-codec = { version = "1.3.0", features = ["derive"] }
+parity-scale-codec = { version = "1.3.1", features = ["derive"] }
 sp-application-crypto = { version = "2.0.0-rc3", path = "../../primitives/application-crypto" }
 sp-arithmetic = { version = "2.0.0-rc3", path = "../../primitives/arithmetic" }
 sp-runtime = { version = "2.0.0-rc3", path = "../../primitives/runtime" }
diff --git a/substrate/client/light/Cargo.toml b/substrate/client/light/Cargo.toml
index 1ef35f72ac..490da15364 100644
--- a/substrate/client/light/Cargo.toml
+++ b/substrate/client/light/Cargo.toml
@@ -20,7 +20,7 @@ sp-core = { version = "2.0.0-rc2", path = "../../primitives/core" }
 sp-state-machine = { version = "0.8.0-rc2", path = "../../primitives/state-machine" }
 sc-client-api = { version = "2.0.0-rc2", path = "../api" }
 sp-api = { version = "2.0.0-rc2", path = "../../primitives/api" }
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 sc-executor = { version = "0.8.0-rc2", path = "../executor" }
 
 [features]
diff --git a/substrate/client/network/Cargo.toml b/substrate/client/network/Cargo.toml
index 94a7b2b57d..8467aa1154 100644
--- a/substrate/client/network/Cargo.toml
+++ b/substrate/client/network/Cargo.toml
@@ -21,7 +21,7 @@ prost-build = "0.6.1"
 bitflags = "1.2.0"
 bs58 = "0.3.1"
 bytes = "0.5.0"
-codec = { package = "parity-scale-codec", version = "1.3.0", features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", features = ["derive"] }
 derive_more = "0.99.2"
 either = "1.5.3"
 erased-serde = "0.3.9"
diff --git a/substrate/client/offchain/Cargo.toml b/substrate/client/offchain/Cargo.toml
index 7f1d23f558..a9cd8c4dea 100644
--- a/substrate/client/offchain/Cargo.toml
+++ b/substrate/client/offchain/Cargo.toml
@@ -22,7 +22,7 @@ log = "0.4.8"
 threadpool = "1.7"
 num_cpus = "1.10"
 sp-offchain = { version = "2.0.0-rc3", path = "../../primitives/offchain" }
-codec = { package = "parity-scale-codec", version = "1.3.0", features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", features = ["derive"] }
 parking_lot = "0.10.0"
 sp-core = { version = "2.0.0-rc3", path = "../../primitives/core" }
 rand = "0.7.2"
diff --git a/substrate/client/rpc-api/Cargo.toml b/substrate/client/rpc-api/Cargo.toml
index c7aad9a1b3..3e3195b914 100644
--- a/substrate/client/rpc-api/Cargo.toml
+++ b/substrate/client/rpc-api/Cargo.toml
@@ -12,7 +12,7 @@ description = "Substrate RPC interfaces."
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 derive_more = "0.99.2"
 futures = { version = "0.3.1", features = ["compat"] }
 jsonrpc-core = "14.2.0"
diff --git a/substrate/client/rpc/Cargo.toml b/substrate/client/rpc/Cargo.toml
index f3557ca6b2..9cda4451c1 100644
--- a/substrate/client/rpc/Cargo.toml
+++ b/substrate/client/rpc/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 sc-rpc-api = { version = "0.8.0-rc3", path = "../rpc-api" }
 sc-client-api = { version = "2.0.0-rc3", path = "../api" }
 sp-api = { version = "2.0.0-rc3", path = "../../primitives/api" }
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 futures = { version = "0.3.1", features = ["compat"] }
 jsonrpc-pubsub = "14.2.0"
 log = "0.4.8"
diff --git a/substrate/client/service/Cargo.toml b/substrate/client/service/Cargo.toml
index 71e8e74c4c..1740e6fad4 100644
--- a/substrate/client/service/Cargo.toml
+++ b/substrate/client/service/Cargo.toml
@@ -59,7 +59,7 @@ sc-light = { version = "2.0.0-rc3", path = "../light" }
 sc-client-api = { version = "2.0.0-rc3", path = "../api" }
 sp-api = { version = "2.0.0-rc3", path = "../../primitives/api" }
 sc-client-db = { version = "0.8.0-rc3", default-features = false, path = "../db" }
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 sc-executor = { version = "0.8.0-rc3", path = "../executor" }
 sc-transaction-pool = { version = "2.0.0-rc3", path = "../transaction-pool" }
 sp-transaction-pool = { version = "2.0.0-rc3", path = "../../primitives/transaction-pool" }
diff --git a/substrate/client/service/test/Cargo.toml b/substrate/client/service/test/Cargo.toml
index 5835dc14c9..7d61e86708 100644
--- a/substrate/client/service/test/Cargo.toml
+++ b/substrate/client/service/test/Cargo.toml
@@ -41,4 +41,4 @@ sc-client-api = { version = "2.0.0-rc3", path = "../../api" }
 sc-block-builder = { version = "0.8.0-rc3", path = "../../block-builder" }
 sc-executor = { version = "0.8.0-rc3", path = "../../executor" }
 sp-panic-handler = { version = "2.0.0-rc3", path = "../../../primitives/panic-handler" }
-parity-scale-codec = "1.3.0"
+parity-scale-codec = "1.3.1"
diff --git a/substrate/client/state-db/Cargo.toml b/substrate/client/state-db/Cargo.toml
index 5b30a2230a..ee9bbf7273 100644
--- a/substrate/client/state-db/Cargo.toml
+++ b/substrate/client/state-db/Cargo.toml
@@ -16,7 +16,7 @@ parking_lot = "0.10.0"
 log = "0.4.8"
 sc-client-api = { version = "2.0.0-rc3", path = "../api" }
 sp-core = { version = "2.0.0-rc3", path = "../../primitives/core" }
-codec = { package = "parity-scale-codec", version = "1.3.0", features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", features = ["derive"] }
 parity-util-mem = { version = "0.6.1", default-features = false, features = ["primitive-types"] }
 parity-util-mem-derive = "0.1.0"
 
diff --git a/substrate/client/transaction-pool/Cargo.toml b/substrate/client/transaction-pool/Cargo.toml
index dce8ce48d2..e837f40a34 100644
--- a/substrate/client/transaction-pool/Cargo.toml
+++ b/substrate/client/transaction-pool/Cargo.toml
@@ -12,7 +12,7 @@ description = "Substrate transaction pool implementation."
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 derive_more = "0.99.2"
 futures = { version = "0.3.1", features = ["compat"] }
 futures-diagnose = "1.0"
diff --git a/substrate/client/transaction-pool/graph/Cargo.toml b/substrate/client/transaction-pool/graph/Cargo.toml
index e174b31988..cb16af0f53 100644
--- a/substrate/client/transaction-pool/graph/Cargo.toml
+++ b/substrate/client/transaction-pool/graph/Cargo.toml
@@ -28,7 +28,7 @@ linked-hash-map = "0.5.2"
 
 [dev-dependencies]
 assert_matches = "1.3.0"
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 substrate-test-runtime = { version = "2.0.0-rc3", path = "../../../test-utils/runtime" }
 criterion = "0.3"
 
diff --git a/substrate/frame/assets/Cargo.toml b/substrate/frame/assets/Cargo.toml
index 0039e8898c..33882671a4 100644
--- a/substrate/frame/assets/Cargo.toml
+++ b/substrate/frame/assets/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 # Needed for various traits. In our case, `OnFinalize`.
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
 # Needed for type-safe access to storage DB.
diff --git a/substrate/frame/atomic-swap/Cargo.toml b/substrate/frame/atomic-swap/Cargo.toml
index a3bf95b2e2..ce32d8b783 100644
--- a/substrate/frame/atomic-swap/Cargo.toml
+++ b/substrate/frame/atomic-swap/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 frame-support = { version = "2.0.0-rc3", default-features = false, path = "../support" }
 frame-system = { version = "2.0.0-rc3", default-features = false, path = "../system" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
diff --git a/substrate/frame/aura/Cargo.toml b/substrate/frame/aura/Cargo.toml
index f28171ae91..5a60d23270 100644
--- a/substrate/frame/aura/Cargo.toml
+++ b/substrate/frame/aura/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 sp-application-crypto = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/application-crypto" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-inherents = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/inherents" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 serde = { version = "1.0.101", optional = true }
diff --git a/substrate/frame/authority-discovery/Cargo.toml b/substrate/frame/authority-discovery/Cargo.toml
index 5cd93d3c31..e3c7a256a9 100644
--- a/substrate/frame/authority-discovery/Cargo.toml
+++ b/substrate/frame/authority-discovery/Cargo.toml
@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 sp-authority-discovery = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/authority-discovery" }
 sp-application-crypto = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/application-crypto" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 serde = { version = "1.0.101", optional = true }
 pallet-session = { version = "2.0.0-rc3", features = ["historical" ], path = "../session", default-features = false }
diff --git a/substrate/frame/authorship/Cargo.toml b/substrate/frame/authorship/Cargo.toml
index 6f7ae89762..9cc25b075d 100644
--- a/substrate/frame/authorship/Cargo.toml
+++ b/substrate/frame/authorship/Cargo.toml
@@ -12,7 +12,7 @@ repository = "https://github.com/paritytech/substrate/"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-inherents = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/inherents" }
 sp-authorship = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/authorship" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
diff --git a/substrate/frame/babe/Cargo.toml b/substrate/frame/babe/Cargo.toml
index dcc6b29376..5e9dcf7fb5 100644
--- a/substrate/frame/babe/Cargo.toml
+++ b/substrate/frame/babe/Cargo.toml
@@ -12,7 +12,7 @@ description = "Consensus extension module for BABE consensus. Collects on-chain
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 serde = { version = "1.0.101", optional = true }
 sp-inherents = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/inherents" }
 sp-application-crypto = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/application-crypto" }
diff --git a/substrate/frame/balances/Cargo.toml b/substrate/frame/balances/Cargo.toml
index d65090b540..02b5732e00 100644
--- a/substrate/frame/balances/Cargo.toml
+++ b/substrate/frame/balances/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
 frame-benchmarking = { version = "2.0.0-rc3", default-features = false, path = "../benchmarking", optional = true }
diff --git a/substrate/frame/benchmarking/Cargo.toml b/substrate/frame/benchmarking/Cargo.toml
index 3b383d2a96..5c6306ebbb 100644
--- a/substrate/frame/benchmarking/Cargo.toml
+++ b/substrate/frame/benchmarking/Cargo.toml
@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 linregress = "0.1"
 paste = "0.1"
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 sp-api = { version = "2.0.0-rc3", path = "../../primitives/api", default-features = false }
 sp-runtime-interface = { version = "2.0.0-rc3", path = "../../primitives/runtime-interface", default-features = false }
 sp-runtime = { version = "2.0.0-rc3", path = "../../primitives/runtime", default-features = false }
diff --git a/substrate/frame/collective/Cargo.toml b/substrate/frame/collective/Cargo.toml
index 071fc83b72..5517f3b03f 100644
--- a/substrate/frame/collective/Cargo.toml
+++ b/substrate/frame/collective/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/core" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-io = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/io" }
diff --git a/substrate/frame/contracts/Cargo.toml b/substrate/frame/contracts/Cargo.toml
index 6c41875c63..b2ba8d014a 100644
--- a/substrate/frame/contracts/Cargo.toml
+++ b/substrate/frame/contracts/Cargo.toml
@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
 pwasm-utils = { version = "0.12.0", default-features = false }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 parity-wasm = { version = "0.41.0", default-features = false }
 wasmi-validation = { version = "0.3.0", default-features = false }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/core" }
diff --git a/substrate/frame/contracts/common/Cargo.toml b/substrate/frame/contracts/common/Cargo.toml
index 4a0581524e..520b723933 100644
--- a/substrate/frame/contracts/common/Cargo.toml
+++ b/substrate/frame/contracts/common/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 # This crate should not rely on any of the frame primitives.
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../../primitives/std" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../../primitives/runtime" }
 
diff --git a/substrate/frame/contracts/rpc/Cargo.toml b/substrate/frame/contracts/rpc/Cargo.toml
index ccfb2ad511..75dc1bf3fb 100644
--- a/substrate/frame/contracts/rpc/Cargo.toml
+++ b/substrate/frame/contracts/rpc/Cargo.toml
@@ -12,7 +12,7 @@ description = "Node-specific RPC methods for interaction with contracts."
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 jsonrpc-core = "14.2.0"
 jsonrpc-core-client = "14.2.0"
 jsonrpc-derive = "14.2.1"
diff --git a/substrate/frame/contracts/rpc/runtime-api/Cargo.toml b/substrate/frame/contracts/rpc/runtime-api/Cargo.toml
index 60d7965342..3596677316 100644
--- a/substrate/frame/contracts/rpc/runtime-api/Cargo.toml
+++ b/substrate/frame/contracts/rpc/runtime-api/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 sp-api = { version = "2.0.0-rc3", default-features = false, path = "../../../../primitives/api" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../../../primitives/std" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../../../primitives/runtime" }
 pallet-contracts-primitives = { version = "2.0.0-rc3", default-features = false, path = "../../common" }
diff --git a/substrate/frame/democracy/Cargo.toml b/substrate/frame/democracy/Cargo.toml
index 9af038aab3..fea378caca 100644
--- a/substrate/frame/democracy/Cargo.toml
+++ b/substrate/frame/democracy/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-io = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/io" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
diff --git a/substrate/frame/elections-phragmen/Cargo.toml b/substrate/frame/elections-phragmen/Cargo.toml
index a33ce0ed29..08cdc5a98e 100644
--- a/substrate/frame/elections-phragmen/Cargo.toml
+++ b/substrate/frame/elections-phragmen/Cargo.toml
@@ -12,7 +12,7 @@ description = "FRAME pallet based on seq-Phragmén election method."
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 serde = { version = "1.0.101", optional = true }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
 sp-npos-elections = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/npos-elections" }
diff --git a/substrate/frame/elections/Cargo.toml b/substrate/frame/elections/Cargo.toml
index 60bb2dcb62..d03ad4f056 100644
--- a/substrate/frame/elections/Cargo.toml
+++ b/substrate/frame/elections/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/core" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-io = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/io" }
diff --git a/substrate/frame/evm/Cargo.toml b/substrate/frame/evm/Cargo.toml
index c465090743..1a6d691cde 100644
--- a/substrate/frame/evm/Cargo.toml
+++ b/substrate/frame/evm/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 frame-support = { version = "2.0.0-rc3", default-features = false, path = "../support" }
 frame-system = { version = "2.0.0-rc3", default-features = false, path = "../system" }
 pallet-timestamp = { version = "2.0.0-rc3", default-features = false, path = "../timestamp" }
diff --git a/substrate/frame/example-offchain-worker/Cargo.toml b/substrate/frame/example-offchain-worker/Cargo.toml
index d32f206de8..f93ffcf9e4 100644
--- a/substrate/frame/example-offchain-worker/Cargo.toml
+++ b/substrate/frame/example-offchain-worker/Cargo.toml
@@ -12,7 +12,7 @@ description = "FRAME example pallet for offchain worker"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 frame-support = { version = "2.0.0-rc3", default-features = false, path = "../support" }
 frame-system = { version = "2.0.0-rc3", default-features = false, path = "../system" }
 serde = { version = "1.0.101", optional = true }
diff --git a/substrate/frame/example/Cargo.toml b/substrate/frame/example/Cargo.toml
index 89be881437..597f2266c3 100644
--- a/substrate/frame/example/Cargo.toml
+++ b/substrate/frame/example/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 frame-support = { version = "2.0.0-rc3", default-features = false, path = "../support" }
 frame-system = { version = "2.0.0-rc3", default-features = false, path = "../system" }
 pallet-balances = { version = "2.0.0-rc3", default-features = false, path = "../balances" }
diff --git a/substrate/frame/executive/Cargo.toml b/substrate/frame/executive/Cargo.toml
index 303cf1c1f7..a922333eb9 100644
--- a/substrate/frame/executive/Cargo.toml
+++ b/substrate/frame/executive/Cargo.toml
@@ -12,7 +12,7 @@ description = "FRAME executives engine"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 frame-support = { version = "2.0.0-rc3", default-features = false, path = "../support" }
 frame-system = { version = "2.0.0-rc3", default-features = false, path = "../system" }
 serde = { version = "1.0.101", optional = true }
diff --git a/substrate/frame/finality-tracker/Cargo.toml b/substrate/frame/finality-tracker/Cargo.toml
index a8e11e83f9..497f4fdec7 100644
--- a/substrate/frame/finality-tracker/Cargo.toml
+++ b/substrate/frame/finality-tracker/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", default-features = false, features = ["derive"] }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 sp-inherents = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/inherents" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
diff --git a/substrate/frame/generic-asset/Cargo.toml b/substrate/frame/generic-asset/Cargo.toml
index eb62b2986f..cdac7a6d6d 100644
--- a/substrate/frame/generic-asset/Cargo.toml
+++ b/substrate/frame/generic-asset/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
 frame-support = { version = "2.0.0-rc3", default-features = false, path = "../support" }
diff --git a/substrate/frame/grandpa/Cargo.toml b/substrate/frame/grandpa/Cargo.toml
index 99a5dad149..1ec939c9bd 100644
--- a/substrate/frame/grandpa/Cargo.toml
+++ b/substrate/frame/grandpa/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-application-crypto = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/application-crypto" }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/core" }
 sp-finality-grandpa = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/finality-grandpa" }
diff --git a/substrate/frame/identity/Cargo.toml b/substrate/frame/identity/Cargo.toml
index 39eae1b689..0435d8c086 100644
--- a/substrate/frame/identity/Cargo.toml
+++ b/substrate/frame/identity/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 enumflags2 = { version = "0.6.2" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-io = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/io" }
diff --git a/substrate/frame/im-online/Cargo.toml b/substrate/frame/im-online/Cargo.toml
index 99979a47c0..2f89ff2cb2 100644
--- a/substrate/frame/im-online/Cargo.toml
+++ b/substrate/frame/im-online/Cargo.toml
@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 sp-application-crypto = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/application-crypto" }
 pallet-authorship = { version = "2.0.0-rc3", default-features = false, path = "../authorship" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/core" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 serde = { version = "1.0.101", optional = true }
diff --git a/substrate/frame/indices/Cargo.toml b/substrate/frame/indices/Cargo.toml
index a52ad8e331..2c856064e7 100644
--- a/substrate/frame/indices/Cargo.toml
+++ b/substrate/frame/indices/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-keyring = { version = "2.0.0-rc3", optional = true, path = "../../primitives/keyring" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-io = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/io" }
diff --git a/substrate/frame/membership/Cargo.toml b/substrate/frame/membership/Cargo.toml
index 6ea035c3f7..e0c94da308 100644
--- a/substrate/frame/membership/Cargo.toml
+++ b/substrate/frame/membership/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-io = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/io" }
 frame-support = { version = "2.0.0-rc3", default-features = false, path = "../support" }
diff --git a/substrate/frame/metadata/Cargo.toml b/substrate/frame/metadata/Cargo.toml
index 459f76b5e8..a8fb9eae5f 100644
--- a/substrate/frame/metadata/Cargo.toml
+++ b/substrate/frame/metadata/Cargo.toml
@@ -12,7 +12,7 @@ description = "Decodable variant of the RuntimeMetadata."
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/core" }
diff --git a/substrate/frame/multisig/Cargo.toml b/substrate/frame/multisig/Cargo.toml
index 00f3e51f38..44ea4dc3e9 100644
--- a/substrate/frame/multisig/Cargo.toml
+++ b/substrate/frame/multisig/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 frame-support = { version = "2.0.0-rc3", default-features = false, path = "../support" }
 frame-system = { version = "2.0.0-rc3", default-features = false, path = "../system" }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/core" }
diff --git a/substrate/frame/nicks/Cargo.toml b/substrate/frame/nicks/Cargo.toml
index 229c548ead..544a0dc734 100644
--- a/substrate/frame/nicks/Cargo.toml
+++ b/substrate/frame/nicks/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-io = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/io" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
diff --git a/substrate/frame/offences/Cargo.toml b/substrate/frame/offences/Cargo.toml
index fa36f42e4a..0b8b74c4a9 100644
--- a/substrate/frame/offences/Cargo.toml
+++ b/substrate/frame/offences/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 pallet-balances = { version = "2.0.0-rc3", default-features = false, path = "../balances" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 serde = { version = "1.0.101", optional = true }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
diff --git a/substrate/frame/offences/benchmarking/Cargo.toml b/substrate/frame/offences/benchmarking/Cargo.toml
index 366736ac4c..ad8520484e 100644
--- a/substrate/frame/offences/benchmarking/Cargo.toml
+++ b/substrate/frame/offences/benchmarking/Cargo.toml
@@ -12,7 +12,7 @@ description = "FRAME offences pallet benchmarking"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 frame-benchmarking = { version = "2.0.0-rc3", default-features = false, path = "../../benchmarking" }
 frame-support = { version = "2.0.0-rc3", default-features = false, path = "../../support" }
 frame-system = { version = "2.0.0-rc3", default-features = false, path = "../../system" }
@@ -28,7 +28,7 @@ sp-staking = { version = "2.0.0-rc3", default-features = false, path = "../../..
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../../primitives/std" }
 
 [dev-dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", features = ["derive"] }
 pallet-staking-reward-curve = { version = "2.0.0-rc3", path = "../../staking/reward-curve" }
 pallet-timestamp = { version = "2.0.0-rc3", path = "../../timestamp" }
 serde = { version = "1.0.101" }
diff --git a/substrate/frame/proxy/Cargo.toml b/substrate/frame/proxy/Cargo.toml
index beb924ab27..215f362cc8 100644
--- a/substrate/frame/proxy/Cargo.toml
+++ b/substrate/frame/proxy/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 frame-support = { version = "2.0.0-rc3", default-features = false, path = "../support" }
 frame-system = { version = "2.0.0-rc3", default-features = false, path = "../system" }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/core" }
diff --git a/substrate/frame/randomness-collective-flip/Cargo.toml b/substrate/frame/randomness-collective-flip/Cargo.toml
index fb3775a625..7e64539491 100644
--- a/substrate/frame/randomness-collective-flip/Cargo.toml
+++ b/substrate/frame/randomness-collective-flip/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 safe-mix = { version = "1.0", default-features = false }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
 frame-support = { version = "2.0.0-rc3", default-features = false, path = "../support" }
 frame-system = { version = "2.0.0-rc3", default-features = false, path = "../system" }
diff --git a/substrate/frame/recovery/Cargo.toml b/substrate/frame/recovery/Cargo.toml
index 88a738b058..33f7b5e521 100644
--- a/substrate/frame/recovery/Cargo.toml
+++ b/substrate/frame/recovery/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 enumflags2 = { version = "0.6.2" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-io = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/io" }
diff --git a/substrate/frame/scored-pool/Cargo.toml b/substrate/frame/scored-pool/Cargo.toml
index b5009079d2..d1e0a5d62e 100644
--- a/substrate/frame/scored-pool/Cargo.toml
+++ b/substrate/frame/scored-pool/Cargo.toml
@@ -12,7 +12,7 @@ description = "FRAME pallet for scored pools"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 serde = { version = "1.0.101", optional = true }
 sp-io = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/io" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
diff --git a/substrate/frame/session/Cargo.toml b/substrate/frame/session/Cargo.toml
index 6b74e3ef5f..38eef24bc6 100644
--- a/substrate/frame/session/Cargo.toml
+++ b/substrate/frame/session/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/core" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-io = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/io" }
diff --git a/substrate/frame/session/benchmarking/Cargo.toml b/substrate/frame/session/benchmarking/Cargo.toml
index da969932b1..b2c70c28d1 100644
--- a/substrate/frame/session/benchmarking/Cargo.toml
+++ b/substrate/frame/session/benchmarking/Cargo.toml
@@ -22,7 +22,7 @@ pallet-session = { version = "2.0.0-rc3", default-features = false, path = "../.
 
 [dev-dependencies]
 serde = { version = "1.0.101" }
-codec = { package = "parity-scale-codec", version = "1.3.0", features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", features = ["derive"] }
 sp-core = { version = "2.0.0-rc3", path = "../../../primitives/core" }
 pallet-staking-reward-curve = { version = "2.0.0-rc3", path = "../../staking/reward-curve" }
 sp-io ={ version = "2.0.0-rc3", path = "../../../primitives/io" }
diff --git a/substrate/frame/society/Cargo.toml b/substrate/frame/society/Cargo.toml
index c9e4f9cb40..eb28046d3f 100644
--- a/substrate/frame/society/Cargo.toml
+++ b/substrate/frame/society/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 frame-support = { version = "2.0.0-rc3", default-features = false, path = "../support" }
diff --git a/substrate/frame/staking/Cargo.toml b/substrate/frame/staking/Cargo.toml
index 829f39b70b..45b2b42d97 100644
--- a/substrate/frame/staking/Cargo.toml
+++ b/substrate/frame/staking/Cargo.toml
@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 static_assertions = "1.1.0"
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-npos-elections = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/npos-elections" }
 sp-io ={ version = "2.0.0-rc3", default-features = false, path = "../../primitives/io" }
diff --git a/substrate/frame/staking/fuzzer/Cargo.toml b/substrate/frame/staking/fuzzer/Cargo.toml
index 6362ebf414..97d79ecad5 100644
--- a/substrate/frame/staking/fuzzer/Cargo.toml
+++ b/substrate/frame/staking/fuzzer/Cargo.toml
@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 honggfuzz = "0.5"
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 pallet-staking = { version = "2.0.0-rc3", path = "..", features = ["runtime-benchmarks"] }
 pallet-staking-reward-curve = { version = "2.0.0-rc3",  path = "../reward-curve" }
 pallet-session = { version = "2.0.0-rc3", path = "../../session" }
diff --git a/substrate/frame/sudo/Cargo.toml b/substrate/frame/sudo/Cargo.toml
index 5aef45f8c2..1bdd2aab69 100644
--- a/substrate/frame/sudo/Cargo.toml
+++ b/substrate/frame/sudo/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-io = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/io" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
diff --git a/substrate/frame/support/Cargo.toml b/substrate/frame/support/Cargo.toml
index dd9354d019..e648eaf32d 100644
--- a/substrate/frame/support/Cargo.toml
+++ b/substrate/frame/support/Cargo.toml
@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 log = "0.4"
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 frame-metadata = { version = "11.0.0-rc3", default-features = false, path = "../metadata" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-io = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/io" }
diff --git a/substrate/frame/support/test/Cargo.toml b/substrate/frame/support/test/Cargo.toml
index a68edc6238..d6e7d7d633 100644
--- a/substrate/frame/support/test/Cargo.toml
+++ b/substrate/frame/support/test/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", default-features = false, features = ["derive"] }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-io ={ version = "2.0.0-rc3", path = "../../../primitives/io", default-features = false }
 sp-state-machine = { version = "0.8.0-rc3", optional = true, path = "../../../primitives/state-machine" }
 frame-support = { version = "2.0.0-rc3", default-features = false, path = "../" }
diff --git a/substrate/frame/system/Cargo.toml b/substrate/frame/system/Cargo.toml
index ca1b5d6a12..af3288a907 100644
--- a/substrate/frame/system/Cargo.toml
+++ b/substrate/frame/system/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/core" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-io = { version = "2.0.0-rc3", path = "../../primitives/io", default-features = false }
diff --git a/substrate/frame/system/benchmarking/Cargo.toml b/substrate/frame/system/benchmarking/Cargo.toml
index 71896f8a39..b1636c21e5 100644
--- a/substrate/frame/system/benchmarking/Cargo.toml
+++ b/substrate/frame/system/benchmarking/Cargo.toml
@@ -12,7 +12,7 @@ description = "FRAME System benchmarking"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../../primitives/std" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../../primitives/runtime" }
 frame-benchmarking = { version = "2.0.0-rc3", default-features = false, path = "../../benchmarking" }
diff --git a/substrate/frame/system/rpc/runtime-api/Cargo.toml b/substrate/frame/system/rpc/runtime-api/Cargo.toml
index 4f599d6d47..d919fd1b58 100644
--- a/substrate/frame/system/rpc/runtime-api/Cargo.toml
+++ b/substrate/frame/system/rpc/runtime-api/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 sp-api = { version = "2.0.0-rc3", default-features = false, path = "../../../../primitives/api" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 
 [features]
 default = ["std"]
diff --git a/substrate/frame/timestamp/Cargo.toml b/substrate/frame/timestamp/Cargo.toml
index 804f17a23a..7d08164bdd 100644
--- a/substrate/frame/timestamp/Cargo.toml
+++ b/substrate/frame/timestamp/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-io = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/io", optional = true }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
diff --git a/substrate/frame/transaction-payment/Cargo.toml b/substrate/frame/transaction-payment/Cargo.toml
index a8b23bfda0..f7a15d962b 100644
--- a/substrate/frame/transaction-payment/Cargo.toml
+++ b/substrate/frame/transaction-payment/Cargo.toml
@@ -12,7 +12,7 @@ description = "FRAME pallet to manage transaction payments"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 serde = { version = "1.0.101", optional = true }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
diff --git a/substrate/frame/transaction-payment/rpc/Cargo.toml b/substrate/frame/transaction-payment/rpc/Cargo.toml
index 2f1e0f06d7..22be6e700b 100644
--- a/substrate/frame/transaction-payment/rpc/Cargo.toml
+++ b/substrate/frame/transaction-payment/rpc/Cargo.toml
@@ -12,7 +12,7 @@ description = "RPC interface for the transaction payment module."
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 jsonrpc-core = "14.2.0"
 jsonrpc-core-client = "14.2.0"
 jsonrpc-derive = "14.2.1"
diff --git a/substrate/frame/transaction-payment/rpc/runtime-api/Cargo.toml b/substrate/frame/transaction-payment/rpc/runtime-api/Cargo.toml
index 8ffa6fb6ee..e63b94cb4b 100644
--- a/substrate/frame/transaction-payment/rpc/runtime-api/Cargo.toml
+++ b/substrate/frame/transaction-payment/rpc/runtime-api/Cargo.toml
@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
 sp-api = { version = "2.0.0-rc3", default-features = false, path = "../../../../primitives/api" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../../../primitives/std" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../../../primitives/runtime" }
 frame-support = { version = "2.0.0-rc3", default-features = false, path = "../../../support" }
diff --git a/substrate/frame/treasury/Cargo.toml b/substrate/frame/treasury/Cargo.toml
index 4c0aae3713..338a6f1dec 100644
--- a/substrate/frame/treasury/Cargo.toml
+++ b/substrate/frame/treasury/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
 frame-support = { version = "2.0.0-rc3", default-features = false, path = "../support" }
diff --git a/substrate/frame/utility/Cargo.toml b/substrate/frame/utility/Cargo.toml
index 65eae9d4cc..f14274d709 100644
--- a/substrate/frame/utility/Cargo.toml
+++ b/substrate/frame/utility/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 frame-support = { version = "2.0.0-rc3", default-features = false, path = "../support" }
 frame-system = { version = "2.0.0-rc3", default-features = false, path = "../system" }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/core" }
diff --git a/substrate/frame/vesting/Cargo.toml b/substrate/frame/vesting/Cargo.toml
index 885768e365..a98a59acef 100644
--- a/substrate/frame/vesting/Cargo.toml
+++ b/substrate/frame/vesting/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 enumflags2 = { version = "0.6.2" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/runtime" }
diff --git a/substrate/primitives/api/Cargo.toml b/substrate/primitives/api/Cargo.toml
index 6e46586975..46bd9164ac 100644
--- a/substrate/primitives/api/Cargo.toml
+++ b/substrate/primitives/api/Cargo.toml
@@ -12,7 +12,7 @@ description = "Substrate runtime api primitives"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 sp-api-proc-macro = { version = "2.0.0-rc3", path = "proc-macro" }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../core" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../std" }
diff --git a/substrate/primitives/api/proc-macro/src/decl_runtime_apis.rs b/substrate/primitives/api/proc-macro/src/decl_runtime_apis.rs
index 7e1391b7b5..93ec09d0e6 100644
--- a/substrate/primitives/api/proc-macro/src/decl_runtime_apis.rs
+++ b/substrate/primitives/api/proc-macro/src/decl_runtime_apis.rs
@@ -191,7 +191,8 @@ fn generate_native_call_generators(decl: &ItemTrait) -> Result<TokenStream> {
 				input: &I, error_desc: &'static str,
 			) -> std::result::Result<R, String>
 		{
-			<R as #crate_::Decode>::decode(
+			<R as #crate_::DecodeLimit>::decode_with_depth_limit(
+				#crate_::MAX_EXTRINSIC_DEPTH,
 				&mut &#crate_::Encode::encode(input)[..],
 			).map_err(|e| format!("{} {}", error_desc, e.what()))
 		}
diff --git a/substrate/primitives/api/proc-macro/src/impl_runtime_apis.rs b/substrate/primitives/api/proc-macro/src/impl_runtime_apis.rs
index 2878bd2c13..b999b9eefd 100644
--- a/substrate/primitives/api/proc-macro/src/impl_runtime_apis.rs
+++ b/substrate/primitives/api/proc-macro/src/impl_runtime_apis.rs
@@ -83,7 +83,10 @@ fn generate_impl_call(
 	Ok(
 		quote!(
 			#(
-				let #pnames : #ptypes = match #c_iter::Decode::decode(&mut #input) {
+				let #pnames : #ptypes = match #c_iter::DecodeLimit::decode_all_with_depth_limit(
+					#c_iter::MAX_EXTRINSIC_DEPTH,
+					&mut #input
+				) {
 					Ok(input) => input,
 					Err(e) => panic!("Bad input data provided to {}: {}", #fn_name_str, e.what()),
 				};
diff --git a/substrate/primitives/api/src/lib.rs b/substrate/primitives/api/src/lib.rs
index ec15c1eae7..0aaf72e2d2 100644
--- a/substrate/primitives/api/src/lib.rs
+++ b/substrate/primitives/api/src/lib.rs
@@ -69,11 +69,14 @@ pub use sp_std::{slice, mem};
 #[cfg(feature = "std")]
 use sp_std::result;
 #[doc(hidden)]
-pub use codec::{Encode, Decode};
+pub use codec::{Encode, Decode, DecodeLimit};
 use sp_core::OpaqueMetadata;
 #[cfg(feature = "std")]
 use std::{panic::UnwindSafe, cell::RefCell};
 
+/// Maximum nesting level for extrinsics.
+pub const MAX_EXTRINSIC_DEPTH: u32 = 256;
+
 /// Declares given traits as runtime apis.
 ///
 /// The macro will create two declarations, one for using on the client side and one for using
diff --git a/substrate/primitives/api/test/Cargo.toml b/substrate/primitives/api/test/Cargo.toml
index 79bd37c826..04181d93f0 100644
--- a/substrate/primitives/api/test/Cargo.toml
+++ b/substrate/primitives/api/test/Cargo.toml
@@ -19,7 +19,7 @@ sp-runtime = { version = "2.0.0-rc3", path = "../../runtime" }
 sp-blockchain = { version = "2.0.0-rc3", path = "../../blockchain" }
 sp-consensus = { version = "0.8.0-rc3", path = "../../../primitives/consensus/common" }
 sc-block-builder = { version = "0.8.0-rc3", path = "../../../client/block-builder" }
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 sp-state-machine = { version = "0.8.0-rc3", path = "../../../primitives/state-machine" }
 trybuild = "1.0.17"
 rustversion = "1.0.0"
diff --git a/substrate/primitives/api/test/tests/ui/mock_only_one_error_type.stderr b/substrate/primitives/api/test/tests/ui/mock_only_one_error_type.stderr
index 281f0024ee..65d05e83a7 100644
--- a/substrate/primitives/api/test/tests/ui/mock_only_one_error_type.stderr
+++ b/substrate/primitives/api/test/tests/ui/mock_only_one_error_type.stderr
@@ -16,9 +16,9 @@ error[E0277]: the trait bound `u32: std::convert::From<std::string::String>` is
 27  | | }
     | |_^ the trait `std::convert::From<std::string::String>` is not implemented for `u32`
     | 
-   ::: $WORKSPACE/primitives/api/src/lib.rs:347:35
+   ::: $WORKSPACE/primitives/api/src/lib.rs:350:35
     |
-347 |       type Error: std::fmt::Debug + From<String>;
+350 |       type Error: std::fmt::Debug + From<String>;
     |                                     ------------ required by this bound in `sp_api_hidden_includes_DECL_RUNTIME_APIS::sp_api::ApiErrorExt`
     |
     = help: the following implementations were found:
diff --git a/substrate/primitives/application-crypto/Cargo.toml b/substrate/primitives/application-crypto/Cargo.toml
index ebc716cd72..29f385a54a 100644
--- a/substrate/primitives/application-crypto/Cargo.toml
+++ b/substrate/primitives/application-crypto/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../core" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../std" }
 sp-io = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/io" }
diff --git a/substrate/primitives/arithmetic/Cargo.toml b/substrate/primitives/arithmetic/Cargo.toml
index 0912d6a69e..b4c655c968 100644
--- a/substrate/primitives/arithmetic/Cargo.toml
+++ b/substrate/primitives/arithmetic/Cargo.toml
@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 integer-sqrt = "0.1.2"
 num-traits = { version = "0.2.8", default-features = false }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../std" }
diff --git a/substrate/primitives/authority-discovery/Cargo.toml b/substrate/primitives/authority-discovery/Cargo.toml
index 4201cd342b..584aef986a 100644
--- a/substrate/primitives/authority-discovery/Cargo.toml
+++ b/substrate/primitives/authority-discovery/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 sp-application-crypto = { version = "2.0.0-rc3", default-features = false, path = "../application-crypto" }
-codec = { package = "parity-scale-codec", default-features = false, version = "1.3.0" }
+codec = { package = "parity-scale-codec", default-features = false, version = "1.3.1" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../std" }
 sp-api = { version = "2.0.0-rc3", default-features = false, path = "../api" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../runtime" }
diff --git a/substrate/primitives/authorship/Cargo.toml b/substrate/primitives/authorship/Cargo.toml
index 4ca6f06207..eb52ca3e0c 100644
--- a/substrate/primitives/authorship/Cargo.toml
+++ b/substrate/primitives/authorship/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 sp-inherents = { version = "2.0.0-rc3", default-features = false, path = "../inherents" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../runtime" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../std" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 
 [features]
 default = [ "std" ]
diff --git a/substrate/primitives/block-builder/Cargo.toml b/substrate/primitives/block-builder/Cargo.toml
index 968107e69a..8f8976949d 100644
--- a/substrate/primitives/block-builder/Cargo.toml
+++ b/substrate/primitives/block-builder/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../runtime" }
 sp-api = { version = "2.0.0-rc3", default-features = false, path = "../api" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../std" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 sp-inherents = { version = "2.0.0-rc3", default-features = false, path = "../inherents" }
 
 [features]
diff --git a/substrate/primitives/blockchain/Cargo.toml b/substrate/primitives/blockchain/Cargo.toml
index bf1e5d8354..b4c22a524a 100644
--- a/substrate/primitives/blockchain/Cargo.toml
+++ b/substrate/primitives/blockchain/Cargo.toml
@@ -17,7 +17,7 @@ log = "0.4.8"
 lru = "0.4.0"
 parking_lot = "0.10.0"
 derive_more = "0.99.2"
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-consensus = { version = "0.8.0-rc3", path = "../consensus/common" }
 sp-runtime = { version = "2.0.0-rc3", path = "../runtime" }
 sp-block-builder = { version = "2.0.0-rc3", path = "../block-builder" }
diff --git a/substrate/primitives/consensus/aura/Cargo.toml b/substrate/primitives/consensus/aura/Cargo.toml
index 9dddc47fe2..24b82f4642 100644
--- a/substrate/primitives/consensus/aura/Cargo.toml
+++ b/substrate/primitives/consensus/aura/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 sp-application-crypto = { version = "2.0.0-rc3", default-features = false, path = "../../application-crypto" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../std" }
 sp-api = { version = "2.0.0-rc3", default-features = false, path = "../../api" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../runtime" }
diff --git a/substrate/primitives/consensus/babe/Cargo.toml b/substrate/primitives/consensus/babe/Cargo.toml
index 538b0a5b05..978b415dc5 100644
--- a/substrate/primitives/consensus/babe/Cargo.toml
+++ b/substrate/primitives/consensus/babe/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 sp-application-crypto = { version = "2.0.0-rc3", default-features = false, path = "../../application-crypto" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 merlin = { version = "2.0", default-features = false }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../std" }
 sp-api = { version = "2.0.0-rc3", default-features = false, path = "../../api" }
diff --git a/substrate/primitives/consensus/common/Cargo.toml b/substrate/primitives/consensus/common/Cargo.toml
index 3f256d3f73..d63abab883 100644
--- a/substrate/primitives/consensus/common/Cargo.toml
+++ b/substrate/primitives/consensus/common/Cargo.toml
@@ -26,7 +26,7 @@ sp-std = { version = "2.0.0-rc3", path = "../../std" }
 sp-version = { version = "2.0.0-rc3", path = "../../version" }
 sp-runtime = { version = "2.0.0-rc3", path = "../../runtime" }
 sp-utils = { version = "2.0.0-rc3", path = "../../utils" }
-codec = { package = "parity-scale-codec", version = "1.3.0", features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", features = ["derive"] }
 parking_lot = "0.10.0"
 serde = { version = "1.0", features = ["derive"] }
 prometheus-endpoint = { package = "substrate-prometheus-endpoint", path = "../../../utils/prometheus", version = "0.8.0-rc3"}
diff --git a/substrate/primitives/consensus/pow/Cargo.toml b/substrate/primitives/consensus/pow/Cargo.toml
index f8b254ff6e..9f9fedb76c 100644
--- a/substrate/primitives/consensus/pow/Cargo.toml
+++ b/substrate/primitives/consensus/pow/Cargo.toml
@@ -16,7 +16,7 @@ sp-api = { version = "2.0.0-rc3", default-features = false, path = "../../api" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../std" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../../runtime" }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../../core" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 
 [features]
 default = ["std"]
diff --git a/substrate/primitives/core/Cargo.toml b/substrate/primitives/core/Cargo.toml
index 69872349ff..3c37f57e70 100644
--- a/substrate/primitives/core/Cargo.toml
+++ b/substrate/primitives/core/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 derive_more = "0.99.2"
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../std" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 log = { version = "0.4.8", default-features = false }
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
 byteorder = { version = "1.3.2", default-features = false }
diff --git a/substrate/primitives/externalities/Cargo.toml b/substrate/primitives/externalities/Cargo.toml
index faa95fd9a1..3af61bbeb0 100644
--- a/substrate/primitives/externalities/Cargo.toml
+++ b/substrate/primitives/externalities/Cargo.toml
@@ -16,4 +16,4 @@ targets = ["x86_64-unknown-linux-gnu"]
 sp-storage = { version = "2.0.0-rc3", path = "../storage" }
 sp-std = { version = "2.0.0-rc3", path = "../std" }
 environmental = { version = "1.1.1" }
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
diff --git a/substrate/primitives/finality-grandpa/Cargo.toml b/substrate/primitives/finality-grandpa/Cargo.toml
index 254c27e8dd..27315b0ff9 100644
--- a/substrate/primitives/finality-grandpa/Cargo.toml
+++ b/substrate/primitives/finality-grandpa/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 sp-application-crypto = { version = "2.0.0-rc3", default-features = false, path = "../application-crypto" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 grandpa = { package = "finality-grandpa", version = "0.12.3", default-features = false, features = ["derive-codec"] }
 log = { version = "0.4.8", optional = true }
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
diff --git a/substrate/primitives/finality-tracker/Cargo.toml b/substrate/primitives/finality-tracker/Cargo.toml
index 779507ea81..60ed88c110 100644
--- a/substrate/primitives/finality-tracker/Cargo.toml
+++ b/substrate/primitives/finality-tracker/Cargo.toml
@@ -12,7 +12,7 @@ description = "FRAME module that tracks the last finalized block, as perceived b
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 sp-inherents = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/inherents" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/std" }
 
diff --git a/substrate/primitives/inherents/Cargo.toml b/substrate/primitives/inherents/Cargo.toml
index 2e3820d392..503aa29d29 100644
--- a/substrate/primitives/inherents/Cargo.toml
+++ b/substrate/primitives/inherents/Cargo.toml
@@ -17,7 +17,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 parking_lot = { version = "0.10.0", optional = true }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../std" }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../core" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 derive_more = { version = "0.99.2", optional = true }
 
 [features]
diff --git a/substrate/primitives/io/Cargo.toml b/substrate/primitives/io/Cargo.toml
index df66740d65..8bb113b1f1 100644
--- a/substrate/primitives/io/Cargo.toml
+++ b/substrate/primitives/io/Cargo.toml
@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 hash-db = { version = "0.15.2", default-features = false }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../core" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../std" }
diff --git a/substrate/primitives/runtime-interface/Cargo.toml b/substrate/primitives/runtime-interface/Cargo.toml
index 3a3d625b5f..12d070b47c 100644
--- a/substrate/primitives/runtime-interface/Cargo.toml
+++ b/substrate/primitives/runtime-interface/Cargo.toml
@@ -18,7 +18,7 @@ sp-std = { version = "2.0.0-rc3", default-features = false, path = "../std" }
 sp-tracing = { version = "2.0.0-rc3", default-features = false, path = "../tracing" }
 sp-runtime-interface-proc-macro = { version = "2.0.0-rc3", path = "proc-macro" }
 sp-externalities = { version = "0.8.0-rc3", optional = true, path = "../externalities" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 static_assertions = "1.0.0"
 primitive-types = { version = "0.7.0", default-features = false }
 
diff --git a/substrate/primitives/runtime/Cargo.toml b/substrate/primitives/runtime/Cargo.toml
index c38faa15a8..d3508c0e8b 100644
--- a/substrate/primitives/runtime/Cargo.toml
+++ b/substrate/primitives/runtime/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../core" }
 sp-application-crypto = { version = "2.0.0-rc3", default-features = false, path = "../application-crypto" }
 sp-arithmetic = { version = "2.0.0-rc3", default-features = false, path = "../arithmetic" }
diff --git a/substrate/primitives/sandbox/Cargo.toml b/substrate/primitives/sandbox/Cargo.toml
index 1a2175aebd..dfd3a44053 100755
--- a/substrate/primitives/sandbox/Cargo.toml
+++ b/substrate/primitives/sandbox/Cargo.toml
@@ -17,7 +17,7 @@ sp-core = { version = "2.0.0-rc3", default-features = false, path = "../core" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../std" }
 sp-io = { version = "2.0.0-rc3", default-features = false, path = "../io" }
 sp-wasm-interface = { version = "2.0.0-rc3", default-features = false, path = "../wasm-interface" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 
 [dev-dependencies]
 wabt = "0.9.2"
diff --git a/substrate/primitives/session/Cargo.toml b/substrate/primitives/session/Cargo.toml
index b3dd297ceb..4abcb80d24 100644
--- a/substrate/primitives/session/Cargo.toml
+++ b/substrate/primitives/session/Cargo.toml
@@ -12,7 +12,7 @@ description = "Primitives for sessions"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-api = { version = "2.0.0-rc3", default-features = false, path = "../api" }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../core" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../std" }
diff --git a/substrate/primitives/staking/Cargo.toml b/substrate/primitives/staking/Cargo.toml
index ce44d8a0f7..7ec400d74a 100644
--- a/substrate/primitives/staking/Cargo.toml
+++ b/substrate/primitives/staking/Cargo.toml
@@ -12,7 +12,7 @@ description = "A crate which contains primitives that are useful for implementat
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../runtime" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../std" }
 
diff --git a/substrate/primitives/state-machine/Cargo.toml b/substrate/primitives/state-machine/Cargo.toml
index b94195db90..77b9e304d4 100644
--- a/substrate/primitives/state-machine/Cargo.toml
+++ b/substrate/primitives/state-machine/Cargo.toml
@@ -21,7 +21,7 @@ trie-root = "0.16.0"
 sp-trie = { version = "2.0.0-rc3", path = "../trie" }
 sp-core = { version = "2.0.0-rc3", path = "../core" }
 sp-panic-handler = { version = "2.0.0-rc3", path = "../panic-handler" }
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 num-traits = "0.2.8"
 rand = "0.7.2"
 sp-externalities = { version = "0.8.0-rc3", path = "../externalities" }
diff --git a/substrate/primitives/test-primitives/Cargo.toml b/substrate/primitives/test-primitives/Cargo.toml
index 87cb398579..abc47f6f9a 100644
--- a/substrate/primitives/test-primitives/Cargo.toml
+++ b/substrate/primitives/test-primitives/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 sp-application-crypto = { version = "2.0.0-rc3", default-features = false, path = "../application-crypto" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-core = { version = "2.0.0-rc3", default-features = false, path = "../core" }
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../runtime" }
diff --git a/substrate/primitives/timestamp/Cargo.toml b/substrate/primitives/timestamp/Cargo.toml
index 59c090eb46..5b2217f0f3 100644
--- a/substrate/primitives/timestamp/Cargo.toml
+++ b/substrate/primitives/timestamp/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 sp-api = { version = "2.0.0-rc3", default-features = false, path = "../api" }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../std" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../runtime" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-inherents = { version = "2.0.0-rc3", default-features = false, path = "../inherents" }
 impl-trait-for-tuples = "0.1.3"
 wasm-timer = { version = "0.2", optional = true }
diff --git a/substrate/primitives/transaction-pool/Cargo.toml b/substrate/primitives/transaction-pool/Cargo.toml
index 94daf519db..6417ae8c29 100644
--- a/substrate/primitives/transaction-pool/Cargo.toml
+++ b/substrate/primitives/transaction-pool/Cargo.toml
@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", optional = true }
+codec = { package = "parity-scale-codec", version = "1.3.1", optional = true }
 derive_more = { version = "0.99.2", optional = true }
 futures = { version = "0.3.1", optional = true }
 log = { version = "0.4.8", optional = true }
diff --git a/substrate/primitives/trie/Cargo.toml b/substrate/primitives/trie/Cargo.toml
index 823d5bc5df..d99a3d1ae7 100644
--- a/substrate/primitives/trie/Cargo.toml
+++ b/substrate/primitives/trie/Cargo.toml
@@ -17,7 +17,7 @@ name = "bench"
 harness = false
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../std" }
 hash-db = { version = "0.15.2", default-features = false }
 trie-db = { version = "0.21.0", default-features = false }
diff --git a/substrate/primitives/version/Cargo.toml b/substrate/primitives/version/Cargo.toml
index eb8c845075..18357953d7 100644
--- a/substrate/primitives/version/Cargo.toml
+++ b/substrate/primitives/version/Cargo.toml
@@ -16,7 +16,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 impl-serde = { version = "0.2.3", optional = true }
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 sp-std = { version = "2.0.0-rc3", default-features = false, path = "../std" }
 sp-runtime = { version = "2.0.0-rc3", default-features = false, path = "../runtime" }
 
diff --git a/substrate/primitives/wasm-interface/Cargo.toml b/substrate/primitives/wasm-interface/Cargo.toml
index 39684a0381..c2e70ce1e4 100644
--- a/substrate/primitives/wasm-interface/Cargo.toml
+++ b/substrate/primitives/wasm-interface/Cargo.toml
@@ -16,7 +16,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 wasmi = { version = "0.6.2", optional = true }
 impl-trait-for-tuples = "0.1.2"
 sp-std = { version = "2.0.0-rc3", path = "../std", default-features = false }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 
 [features]
 default = [ "std" ]
diff --git a/substrate/test-utils/client/Cargo.toml b/substrate/test-utils/client/Cargo.toml
index 331c7e2801..f5604ceb23 100644
--- a/substrate/test-utils/client/Cargo.toml
+++ b/substrate/test-utils/client/Cargo.toml
@@ -22,7 +22,7 @@ sc-service = { version = "0.8.0-rc3", default-features = false, features = ["tes
 futures = "0.3.4"
 hash-db = "0.15.2"
 sp-keyring = { version = "2.0.0-rc3", path = "../../primitives/keyring" }
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 sp-core = { version = "2.0.0-rc3", path = "../../primitives/core" }
 sp-runtime = { version = "2.0.0-rc3", path = "../../primitives/runtime" }
 sp-blockchain = { version = "2.0.0-rc3", path = "../../primitives/blockchain" }
diff --git a/substrate/test-utils/runtime/Cargo.toml b/substrate/test-utils/runtime/Cargo.toml
index 9016ddbff5..e307522ead 100644
--- a/substrate/test-utils/runtime/Cargo.toml
+++ b/substrate/test-utils/runtime/Cargo.toml
@@ -17,7 +17,7 @@ sp-application-crypto = { version = "2.0.0-rc3", default-features = false, path
 sp-consensus-aura = { version = "0.8.0-rc3", default-features = false, path = "../../primitives/consensus/aura" }
 sp-consensus-babe = { version = "0.8.0-rc3", default-features = false, path = "../../primitives/consensus/babe" }
 sp-block-builder = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/block-builder" }
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 frame-executive = { version = "2.0.0-rc3", default-features = false, path = "../../frame/executive" }
 sp-inherents = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/inherents" }
 sp-keyring = { version = "2.0.0-rc3", optional = true, path = "../../primitives/keyring" }
diff --git a/substrate/test-utils/runtime/client/Cargo.toml b/substrate/test-utils/runtime/client/Cargo.toml
index 1b41b63b99..7a69f5ed22 100644
--- a/substrate/test-utils/runtime/client/Cargo.toml
+++ b/substrate/test-utils/runtime/client/Cargo.toml
@@ -21,7 +21,7 @@ substrate-test-runtime = { version = "2.0.0-rc3", path = "../../runtime" }
 sp-runtime = { version = "2.0.0-rc3", path = "../../../primitives/runtime" }
 sp-api = { version = "2.0.0-rc3", path = "../../../primitives/api" }
 sp-blockchain = { version = "2.0.0-rc3", path = "../../../primitives/blockchain" }
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 sc-client-api = { version = "2.0.0-rc3", path = "../../../client/api" }
 sc-consensus = { version = "0.8.0-rc3", path = "../../../client/consensus/common" }
 sc-service = { version = "0.8.0-rc3", default-features = false, path = "../../../client/service" }
diff --git a/substrate/test-utils/runtime/transaction-pool/Cargo.toml b/substrate/test-utils/runtime/transaction-pool/Cargo.toml
index 0dc14f4edf..e5c93ef8ad 100644
--- a/substrate/test-utils/runtime/transaction-pool/Cargo.toml
+++ b/substrate/test-utils/runtime/transaction-pool/Cargo.toml
@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 substrate-test-runtime-client = { version = "2.0.0-rc3", path = "../client" }
 parking_lot = "0.10.0"
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 sp-blockchain = { version = "2.0.0-rc3", path = "../../../primitives/blockchain" }
 sp-runtime = { version = "2.0.0-rc3", path = "../../../primitives/runtime" }
 sp-transaction-pool = { version = "2.0.0-rc3", path = "../../../primitives/transaction-pool" }
diff --git a/substrate/utils/fork-tree/Cargo.toml b/substrate/utils/fork-tree/Cargo.toml
index de3f19f0a1..6c8410ab76 100644
--- a/substrate/utils/fork-tree/Cargo.toml
+++ b/substrate/utils/fork-tree/Cargo.toml
@@ -13,4 +13,4 @@ documentation = "https://docs.rs/fork-tree"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", features = ["derive"] }
diff --git a/substrate/utils/frame/benchmarking-cli/Cargo.toml b/substrate/utils/frame/benchmarking-cli/Cargo.toml
index d53c4c2fe0..364dc472cb 100644
--- a/substrate/utils/frame/benchmarking-cli/Cargo.toml
+++ b/substrate/utils/frame/benchmarking-cli/Cargo.toml
@@ -22,7 +22,7 @@ sp-externalities = { version = "0.8.0-rc3", path = "../../../primitives/external
 sp-runtime = { version = "2.0.0-rc3", path = "../../../primitives/runtime" }
 sp-state-machine = { version = "0.8.0-rc3", path = "../../../primitives/state-machine" }
 structopt = "0.3.8"
-codec = { version = "1.3.0", package = "parity-scale-codec" }
+codec = { version = "1.3.1", package = "parity-scale-codec" }
 
 [features]
 default = ["db"]
diff --git a/substrate/utils/frame/rpc/support/Cargo.toml b/substrate/utils/frame/rpc/support/Cargo.toml
index 092c2c402d..d7e4259635 100644
--- a/substrate/utils/frame/rpc/support/Cargo.toml
+++ b/substrate/utils/frame/rpc/support/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 futures = { version = "0.3.0", features = ["compat"] }
 jsonrpc-client-transports = { version = "14.2.0", default-features = false, features = ["http"] }
 jsonrpc-core = "14.2.0"
-codec = { package = "parity-scale-codec", version = "1" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 serde = "1"
 frame-support = { version = "2.0.0-rc3", path = "../../../../frame/support" }
 sp-storage = { version = "2.0.0-rc3", path = "../../../../primitives/storage" }
diff --git a/substrate/utils/frame/rpc/system/Cargo.toml b/substrate/utils/frame/rpc/system/Cargo.toml
index 21cd00ebd4..a03a08b3ff 100644
--- a/substrate/utils/frame/rpc/system/Cargo.toml
+++ b/substrate/utils/frame/rpc/system/Cargo.toml
@@ -13,7 +13,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 sc-client-api = { version = "2.0.0-rc3", path = "../../../../client/api" }
-codec = { package = "parity-scale-codec", version = "1.3.0" }
+codec = { package = "parity-scale-codec", version = "1.3.1" }
 futures = { version = "0.3.4", features = ["compat"] }
 jsonrpc-core = "14.2.0"
 jsonrpc-core-client = "14.2.0"