diff --git a/polkadot/Cargo.lock b/polkadot/Cargo.lock
index 0b840e4fb2..1143c521b4 100644
--- a/polkadot/Cargo.lock
+++ b/polkadot/Cargo.lock
@@ -5903,9 +5903,9 @@ dependencies = [
 
 [[package]]
 name = "parity-scale-codec"
-version = "3.0.0"
+version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2a7f3fcf5e45fc28b84dcdab6b983e77f197ec01f325a33f404ba6855afd1070"
+checksum = "8483b84fb12de1dc23bf95d26030d16cea56391d136db0db37f749508104e3e6"
 dependencies = [
  "arrayvec 0.7.2",
  "bitvec",
@@ -5917,9 +5917,9 @@ dependencies = [
 
 [[package]]
 name = "parity-scale-codec-derive"
-version = "3.0.0"
+version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2c6e626dc84025ff56bf1476ed0e30d10c84d7f89a475ef46ebabee1095a8fba"
+checksum = "7259388ceb4c23bc09caef272c9e7a732b3b8f9fbd0b41f0009a91d6548cc1d9"
 dependencies = [
  "proc-macro-crate 1.1.3",
  "proc-macro2",
diff --git a/polkadot/core-primitives/Cargo.toml b/polkadot/core-primitives/Cargo.toml
index 866a9826f4..3c5c6c397e 100644
--- a/polkadot/core-primitives/Cargo.toml
+++ b/polkadot/core-primitives/Cargo.toml
@@ -9,7 +9,7 @@ sp-core = { git = "https://github.com/paritytech/substrate", branch = "master",
 sp-std = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 sp-runtime = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 scale-info = { version = "2.0.0", default-features = false, features = ["derive"] }
-parity-scale-codec = { version = "3.0.0", default-features = false, features = [ "derive" ] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = [ "derive" ] }
 parity-util-mem = { version = "0.11.0", default-features = false, optional = true }
 
 [features]
diff --git a/polkadot/erasure-coding/Cargo.toml b/polkadot/erasure-coding/Cargo.toml
index 9c6b3e398d..c45e5efa1e 100644
--- a/polkadot/erasure-coding/Cargo.toml
+++ b/polkadot/erasure-coding/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2021"
 polkadot-primitives = { path = "../primitives" }
 polkadot-node-primitives = { package = "polkadot-node-primitives", path = "../node/primitives" }
 novelpoly = { package = "reed-solomon-novelpoly", version = "1.0.0" }
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["std", "derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["std", "derive"] }
 sp-core = { git = "https://github.com/paritytech/substrate", branch = "master" }
 trie = { package = "sp-trie", git = "https://github.com/paritytech/substrate", branch = "master" }
 thiserror = "1.0.30"
diff --git a/polkadot/node/collation-generation/Cargo.toml b/polkadot/node/collation-generation/Cargo.toml
index 858c910f8f..eeedd2c448 100644
--- a/polkadot/node/collation-generation/Cargo.toml
+++ b/polkadot/node/collation-generation/Cargo.toml
@@ -15,7 +15,7 @@ polkadot-primitives = { path = "../../primitives" }
 sp-core = { git = "https://github.com/paritytech/substrate", branch = "master" }
 sp-maybe-compressed-blob  = { git = "https://github.com/paritytech/substrate", branch = "master" }
 thiserror = "1.0.30"
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["bit-vec", "derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["bit-vec", "derive"] }
 
 [dev-dependencies]
 polkadot-node-subsystem-test-helpers = { path = "../subsystem-test-helpers" }
diff --git a/polkadot/node/core/approval-voting/Cargo.toml b/polkadot/node/core/approval-voting/Cargo.toml
index 59371ae6c9..7146a2b364 100644
--- a/polkadot/node/core/approval-voting/Cargo.toml
+++ b/polkadot/node/core/approval-voting/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 [dependencies]
 futures = "0.3.21"
 futures-timer = "3.0.2"
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["bit-vec", "derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["bit-vec", "derive"] }
 tracing = "0.1.32"
 bitvec = { version = "1.0.0", default-features = false, features = ["alloc"] }
 lru = "0.7"
diff --git a/polkadot/node/core/av-store/Cargo.toml b/polkadot/node/core/av-store/Cargo.toml
index 6534400d88..1a3788dd5f 100644
--- a/polkadot/node/core/av-store/Cargo.toml
+++ b/polkadot/node/core/av-store/Cargo.toml
@@ -12,7 +12,7 @@ thiserror = "1.0.30"
 tracing = "0.1.32"
 bitvec = "1.0.0"
 
-parity-scale-codec = { version = "3.0.0", features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", features = ["derive"] }
 erasure = { package = "polkadot-erasure-coding", path = "../../../erasure-coding" }
 polkadot-subsystem = { package = "polkadot-node-subsystem", path = "../../subsystem" }
 polkadot-node-subsystem-util = { path = "../../subsystem-util" }
diff --git a/polkadot/node/core/candidate-validation/Cargo.toml b/polkadot/node/core/candidate-validation/Cargo.toml
index f666d1b7e0..b3de8fa6d9 100644
--- a/polkadot/node/core/candidate-validation/Cargo.toml
+++ b/polkadot/node/core/candidate-validation/Cargo.toml
@@ -10,7 +10,7 @@ futures = "0.3.21"
 tracing = "0.1.32"
 
 sp-maybe-compressed-blob = { package = "sp-maybe-compressed-blob", git = "https://github.com/paritytech/substrate", branch = "master" }
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["bit-vec", "derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["bit-vec", "derive"] }
 
 polkadot-primitives = { path = "../../../primitives" }
 polkadot-parachain = { path = "../../../parachain" }
diff --git a/polkadot/node/core/chain-api/Cargo.toml b/polkadot/node/core/chain-api/Cargo.toml
index 40e6f016ee..d4b712a935 100644
--- a/polkadot/node/core/chain-api/Cargo.toml
+++ b/polkadot/node/core/chain-api/Cargo.toml
@@ -17,7 +17,7 @@ sc-consensus-babe = { git = "https://github.com/paritytech/substrate", branch =
 [dev-dependencies]
 futures = { version = "0.3.21", features = ["thread-pool"] }
 maplit = "1.0.2"
-parity-scale-codec = "3.0.0"
+parity-scale-codec = "3.1.0"
 polkadot-node-primitives = { path = "../../primitives" }
 polkadot-node-subsystem-test-helpers = { path = "../../subsystem-test-helpers" }
 sp-core = { git = "https://github.com/paritytech/substrate", branch = "master" }
diff --git a/polkadot/node/core/chain-selection/Cargo.toml b/polkadot/node/core/chain-selection/Cargo.toml
index ea5fb86b10..8366299575 100644
--- a/polkadot/node/core/chain-selection/Cargo.toml
+++ b/polkadot/node/core/chain-selection/Cargo.toml
@@ -15,7 +15,7 @@ polkadot-node-subsystem = { path = "../../subsystem" }
 polkadot-node-subsystem-util = { path = "../../subsystem-util" }
 kvdb = "0.11.0"
 thiserror = "1.0.30"
-parity-scale-codec = "3.0.0"
+parity-scale-codec = "3.1.0"
 
 [dev-dependencies]
 polkadot-node-subsystem-test-helpers = { path = "../../subsystem-test-helpers" }
diff --git a/polkadot/node/core/dispute-coordinator/Cargo.toml b/polkadot/node/core/dispute-coordinator/Cargo.toml
index ba45121526..4d3aeb5564 100644
--- a/polkadot/node/core/dispute-coordinator/Cargo.toml
+++ b/polkadot/node/core/dispute-coordinator/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 [dependencies]
 futures = "0.3.21"
 tracing = "0.1.32"
-parity-scale-codec = "3.0.0"
+parity-scale-codec = "3.1.0"
 kvdb = "0.11.0"
 thiserror = "1.0.30"
 lru = "0.7.3"
diff --git a/polkadot/node/core/pvf/Cargo.toml b/polkadot/node/core/pvf/Cargo.toml
index 37b93be066..d1d89d5241 100644
--- a/polkadot/node/core/pvf/Cargo.toml
+++ b/polkadot/node/core/pvf/Cargo.toml
@@ -19,7 +19,7 @@ slotmap = "1.0"
 tracing = "0.1.32"
 pin-project = "1.0.9"
 rand = "0.8.5"
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 polkadot-parachain = { path = "../../../parachain" }
 polkadot-core-primitives = { path = "../../../core-primitives" }
 polkadot-node-subsystem-util = { path = "../../subsystem-util"}
diff --git a/polkadot/node/jaeger/Cargo.toml b/polkadot/node/jaeger/Cargo.toml
index c64248d374..f5b1a64b3d 100644
--- a/polkadot/node/jaeger/Cargo.toml
+++ b/polkadot/node/jaeger/Cargo.toml
@@ -16,4 +16,4 @@ sc-network = { git = "https://github.com/paritytech/substrate", branch = "master
 sp-core = { git = "https://github.com/paritytech/substrate", branch = "master" }
 thiserror = "1.0.30"
 log = "0.4.13"
-parity-scale-codec = { version = "3.0.0", default-features = false }
+parity-scale-codec = { version = "3.1.0", default-features = false }
diff --git a/polkadot/node/network/availability-distribution/Cargo.toml b/polkadot/node/network/availability-distribution/Cargo.toml
index 3c75d8fda7..16be328a84 100644
--- a/polkadot/node/network/availability-distribution/Cargo.toml
+++ b/polkadot/node/network/availability-distribution/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 [dependencies]
 futures = "0.3.21"
 tracing = "0.1.32"
-parity-scale-codec = { version = "3.0.0", features = ["std"] }
+parity-scale-codec = { version = "3.1.0", features = ["std"] }
 polkadot-primitives = { path = "../../../primitives" }
 polkadot-erasure-coding = { path = "../../../erasure-coding" }
 polkadot-subsystem = { package = "polkadot-node-subsystem", path = "../../subsystem" }
diff --git a/polkadot/node/network/availability-recovery/Cargo.toml b/polkadot/node/network/availability-recovery/Cargo.toml
index 42c47ed2ed..85614fe08e 100644
--- a/polkadot/node/network/availability-recovery/Cargo.toml
+++ b/polkadot/node/network/availability-recovery/Cargo.toml
@@ -18,7 +18,7 @@ polkadot-node-primitives = { path = "../../primitives" }
 polkadot-subsystem = { package = "polkadot-node-subsystem", path = "../../subsystem" }
 polkadot-node-subsystem-util = { path = "../../subsystem-util" }
 polkadot-node-network-protocol = { path = "../../network/protocol" }
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 sc-network = { git = "https://github.com/paritytech/substrate", branch = "master" }
 
 [dev-dependencies]
diff --git a/polkadot/node/network/bridge/Cargo.toml b/polkadot/node/network/bridge/Cargo.toml
index 922e966e86..232dd1b481 100644
--- a/polkadot/node/network/bridge/Cargo.toml
+++ b/polkadot/node/network/bridge/Cargo.toml
@@ -9,7 +9,7 @@ async-trait = "0.1.52"
 futures = "0.3.21"
 tracing = "0.1.32"
 polkadot-primitives = { path = "../../../primitives" }
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 sc-network = { git = "https://github.com/paritytech/substrate", branch = "master" }
 sp-consensus = { git = "https://github.com/paritytech/substrate", branch = "master" }
 polkadot-subsystem = { package = "polkadot-node-subsystem", path = "../../subsystem" }
diff --git a/polkadot/node/network/collator-protocol/Cargo.toml b/polkadot/node/network/collator-protocol/Cargo.toml
index 746584e233..5ceb871f95 100644
--- a/polkadot/node/network/collator-protocol/Cargo.toml
+++ b/polkadot/node/network/collator-protocol/Cargo.toml
@@ -30,7 +30,7 @@ assert_matches = "1.4.0"
 sp-core = { git = "https://github.com/paritytech/substrate", branch = "master", features = ["std"] }
 sp-keyring = { git = "https://github.com/paritytech/substrate", branch = "master" }
 sc-network = { git = "https://github.com/paritytech/substrate", branch = "master" }
-parity-scale-codec = { version = "3.0.0", features = ["std"] }
+parity-scale-codec = { version = "3.1.0", features = ["std"] }
 
 polkadot-subsystem-testhelpers = { package = "polkadot-node-subsystem-test-helpers", path = "../../subsystem-test-helpers" }
 polkadot-primitives-test-helpers = { path = "../../../primitives/test-helpers" }
diff --git a/polkadot/node/network/dispute-distribution/Cargo.toml b/polkadot/node/network/dispute-distribution/Cargo.toml
index f798fa4c53..6e832794d9 100644
--- a/polkadot/node/network/dispute-distribution/Cargo.toml
+++ b/polkadot/node/network/dispute-distribution/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2021"
 futures = "0.3.21"
 tracing = "0.1.32"
 derive_more = "0.99.17"
-parity-scale-codec = { version = "3.0.0", features = ["std"] }
+parity-scale-codec = { version = "3.1.0", features = ["std"] }
 polkadot-primitives = { path = "../../../primitives" }
 polkadot-erasure-coding = { path = "../../../erasure-coding" }
 polkadot-subsystem = { package = "polkadot-node-subsystem", path = "../../subsystem" }
diff --git a/polkadot/node/network/protocol/Cargo.toml b/polkadot/node/network/protocol/Cargo.toml
index f0fee078e2..b4481d0d8c 100644
--- a/polkadot/node/network/protocol/Cargo.toml
+++ b/polkadot/node/network/protocol/Cargo.toml
@@ -10,7 +10,7 @@ async-trait = "0.1.52"
 polkadot-primitives = { path = "../../../primitives" }
 polkadot-node-primitives = { path = "../../primitives" }
 polkadot-node-jaeger = { path = "../../jaeger" }
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 sc-network = { git = "https://github.com/paritytech/substrate", branch = "master" }
 sc-authority-discovery = { git = "https://github.com/paritytech/substrate", branch = "master" }
 strum = { version = "0.24", features = ["derive"] }
diff --git a/polkadot/node/network/statement-distribution/Cargo.toml b/polkadot/node/network/statement-distribution/Cargo.toml
index 147674cc0a..79a999a4ac 100644
--- a/polkadot/node/network/statement-distribution/Cargo.toml
+++ b/polkadot/node/network/statement-distribution/Cargo.toml
@@ -17,7 +17,7 @@ polkadot-node-subsystem-util = { path = "../../subsystem-util" }
 polkadot-node-network-protocol = { path = "../../network/protocol" }
 arrayvec = "0.5.2"
 indexmap = "1.8.0"
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 thiserror = "1.0.30"
 fatality = "0.0.6"
 
diff --git a/polkadot/node/primitives/Cargo.toml b/polkadot/node/primitives/Cargo.toml
index cdbd204507..1490a99600 100644
--- a/polkadot/node/primitives/Cargo.toml
+++ b/polkadot/node/primitives/Cargo.toml
@@ -9,7 +9,7 @@ description = "Primitives types for the Node-side"
 bounded-vec = "0.5"
 futures = "0.3.21"
 polkadot-primitives = { path = "../../primitives" }
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 sp-core = { git = "https://github.com/paritytech/substrate", branch = "master" }
 sp-application-crypto = { git = "https://github.com/paritytech/substrate", branch = "master" }
 sp-consensus-vrf = { git = "https://github.com/paritytech/substrate", branch = "master" }
diff --git a/polkadot/node/subsystem-util/Cargo.toml b/polkadot/node/subsystem-util/Cargo.toml
index b0eadf6066..f5be901883 100644
--- a/polkadot/node/subsystem-util/Cargo.toml
+++ b/polkadot/node/subsystem-util/Cargo.toml
@@ -9,7 +9,7 @@ description = "Subsystem traits and message definitions"
 async-trait = "0.1.52"
 futures = "0.3.21"
 itertools = "0.10"
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 parking_lot = "0.11.2"
 pin-project = "1.0.9"
 rand = "0.8.5"
diff --git a/polkadot/node/test/client/Cargo.toml b/polkadot/node/test/client/Cargo.toml
index e78c243a23..42d301961d 100644
--- a/polkadot/node/test/client/Cargo.toml
+++ b/polkadot/node/test/client/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 
 # Polkadot dependencies
 polkadot-test-runtime = { path = "../../../runtime/test-runtime" }
diff --git a/polkadot/node/zombienet-backchannel/Cargo.toml b/polkadot/node/zombienet-backchannel/Cargo.toml
index 46765de2ed..620f399ca8 100644
--- a/polkadot/node/zombienet-backchannel/Cargo.toml
+++ b/polkadot/node/zombienet-backchannel/Cargo.toml
@@ -14,7 +14,7 @@ url = "2.0.0"
 tokio-tungstenite = "0.17"
 futures-util = "0.3.21"
 lazy_static = "1.4.0"
-parity-scale-codec = { version = "3.0.0", features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", features = ["derive"] }
 reqwest = "0.11"
 thiserror = "1.0.30"
 tracing = "0.1.32"
diff --git a/polkadot/parachain/Cargo.toml b/polkadot/parachain/Cargo.toml
index fc683c1fa5..befadc5c44 100644
--- a/polkadot/parachain/Cargo.toml
+++ b/polkadot/parachain/Cargo.toml
@@ -9,7 +9,7 @@ edition = "2021"
 # note: special care is taken to avoid inclusion of `sp-io` externals when compiling
 # this crate for WASM. This is critical to avoid forcing all parachain WASM into implementing
 # various unnecessary Substrate-specific endpoints.
-parity-scale-codec = { version = "3.0.0", default-features = false, features = [ "derive" ] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = [ "derive" ] }
 parity-util-mem = { version = "0.11.0", default-features = false, optional = true }
 scale-info = { version = "2.0.0", default-features = false, features = ["derive"] }
 sp-std = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
diff --git a/polkadot/parachain/test-parachains/Cargo.toml b/polkadot/parachain/test-parachains/Cargo.toml
index da96f1a3f8..127185d398 100644
--- a/polkadot/parachain/test-parachains/Cargo.toml
+++ b/polkadot/parachain/test-parachains/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 
 [dependencies]
 tiny-keccak = "2.0.2"
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 
 adder = { package = "test-parachain-adder", path = "adder" }
 halt = { package = "test-parachain-halt", path = "halt" }
diff --git a/polkadot/parachain/test-parachains/adder/Cargo.toml b/polkadot/parachain/test-parachains/adder/Cargo.toml
index 812adc9abc..edd46cd274 100644
--- a/polkadot/parachain/test-parachains/adder/Cargo.toml
+++ b/polkadot/parachain/test-parachains/adder/Cargo.toml
@@ -8,7 +8,7 @@ build = "build.rs"
 
 [dependencies]
 parachain = { package = "polkadot-parachain", path = "../../", default-features = false, features = [ "wasm-api" ] }
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 sp-std = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 tiny-keccak = { version = "2.0.2", features = ["keccak"] }
 dlmalloc = { version = "0.2.3", features = [ "global" ] }
diff --git a/polkadot/parachain/test-parachains/adder/collator/Cargo.toml b/polkadot/parachain/test-parachains/adder/collator/Cargo.toml
index 7950c936bc..90a177f875 100644
--- a/polkadot/parachain/test-parachains/adder/collator/Cargo.toml
+++ b/polkadot/parachain/test-parachains/adder/collator/Cargo.toml
@@ -14,7 +14,7 @@ name = "adder_collator_puppet_worker"
 path = "bin/puppet_worker.rs"
 
 [dependencies]
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 clap = { version = "3.1", features = ["derive"] }
 futures = "0.3.21"
 futures-timer = "3.0.2"
diff --git a/polkadot/parachain/test-parachains/undying/Cargo.toml b/polkadot/parachain/test-parachains/undying/Cargo.toml
index 6d78c62d43..a8374bdca6 100644
--- a/polkadot/parachain/test-parachains/undying/Cargo.toml
+++ b/polkadot/parachain/test-parachains/undying/Cargo.toml
@@ -8,7 +8,7 @@ build = "build.rs"
 
 [dependencies]
 parachain = { package = "polkadot-parachain", path = "../../", default-features = false, features = [ "wasm-api" ] }
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 sp-std = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 tiny-keccak = { version = "2.0.2", features = ["keccak"] }
 dlmalloc = { version = "0.2.3", features = [ "global" ] }
diff --git a/polkadot/parachain/test-parachains/undying/collator/Cargo.toml b/polkadot/parachain/test-parachains/undying/collator/Cargo.toml
index 8d6608d93c..71efbd07bd 100644
--- a/polkadot/parachain/test-parachains/undying/collator/Cargo.toml
+++ b/polkadot/parachain/test-parachains/undying/collator/Cargo.toml
@@ -14,7 +14,7 @@ name = "undying_collator_puppet_worker"
 path = "bin/puppet_worker.rs"
 
 [dependencies]
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 clap = { version = "3.1", features = ["derive"] }
 futures = "0.3.19"
 futures-timer = "3.0.2"
diff --git a/polkadot/primitives/Cargo.toml b/polkadot/primitives/Cargo.toml
index 377f11d588..6c0eeba1ec 100644
--- a/polkadot/primitives/Cargo.toml
+++ b/polkadot/primitives/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 [dependencies]
 serde = { version = "1.0.136", optional = true, features = ["derive"] }
 scale-info = { version = "2.0.0", default-features = false, features = ["bit-vec", "derive"] }
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["bit-vec", "derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["bit-vec", "derive"] }
 primitives = { package = "sp-core", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 inherents = { package = "sp-inherents", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 application-crypto = { package = "sp-application-crypto", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
diff --git a/polkadot/runtime/common/Cargo.toml b/polkadot/runtime/common/Cargo.toml
index b823e597b3..93f3851c2c 100644
--- a/polkadot/runtime/common/Cargo.toml
+++ b/polkadot/runtime/common/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 [dependencies]
 impl-trait-for-tuples = "0.2.2"
 bitvec = { version = "1.0.0", default-features = false, features = ["alloc"] }
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 log = { version = "0.4.13", default-features = false }
 rustc-hex = { version = "2.1.0", default-features = false }
 scale-info = { version = "2.0.0", default-features = false, features = ["derive"] }
diff --git a/polkadot/runtime/common/slot_range_helper/Cargo.toml b/polkadot/runtime/common/slot_range_helper/Cargo.toml
index 20ed3dd6c7..ac16d54f92 100644
--- a/polkadot/runtime/common/slot_range_helper/Cargo.toml
+++ b/polkadot/runtime/common/slot_range_helper/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 [dependencies]
 paste = "1.0"
 enumn = "0.1.3"
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 sp-std = { package = "sp-std", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 sp-runtime = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 
diff --git a/polkadot/runtime/kusama/Cargo.toml b/polkadot/runtime/kusama/Cargo.toml
index d17db9246b..96c1bc2f42 100644
--- a/polkadot/runtime/kusama/Cargo.toml
+++ b/polkadot/runtime/kusama/Cargo.toml
@@ -7,7 +7,7 @@ build = "build.rs"
 
 [dependencies]
 bitvec = { version = "1.0.0", default-features = false, features = ["alloc"] }
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive", "max-encoded-len"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive", "max-encoded-len"] }
 scale-info = { version = "2.0.0", default-features = false, features = ["derive"] }
 log = { version = "0.4.14", default-features = false }
 rustc-hex = { version = "2.1.0", default-features = false }
diff --git a/polkadot/runtime/metrics/Cargo.toml b/polkadot/runtime/metrics/Cargo.toml
index a4769d9e5e..73979ca4e8 100644
--- a/polkadot/runtime/metrics/Cargo.toml
+++ b/polkadot/runtime/metrics/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 [dependencies]
 sp-std = { package = "sp-std", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false}
 sp-tracing = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
-parity-scale-codec = { version = "3.0.0", default-features = false }
+parity-scale-codec = { version = "3.1.0", default-features = false }
 primitives = { package = "polkadot-primitives", path = "../../primitives", default-features = false }
 
 bs58 = { version = "0.4.0", default-features = false, features = ["alloc"] }
diff --git a/polkadot/runtime/parachains/Cargo.toml b/polkadot/runtime/parachains/Cargo.toml
index 096ce2b41b..68712f40b3 100644
--- a/polkadot/runtime/parachains/Cargo.toml
+++ b/polkadot/runtime/parachains/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2021"
 
 [dependencies]
 bitvec = { version = "1.0.0", default-features = false, features = ["alloc"] }
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 log = { version = "0.4.14", default-features = false }
 rustc-hex = { version = "2.1.0", default-features = false }
 scale-info = { version = "2.0.0", default-features = false, features = ["derive"] }
diff --git a/polkadot/runtime/polkadot/Cargo.toml b/polkadot/runtime/polkadot/Cargo.toml
index 0a5c8e8f3e..59c1309d37 100644
--- a/polkadot/runtime/polkadot/Cargo.toml
+++ b/polkadot/runtime/polkadot/Cargo.toml
@@ -7,7 +7,7 @@ build = "build.rs"
 
 [dependencies]
 bitvec = { version = "1.0.0", default-features = false, features = ["alloc"] }
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive", "max-encoded-len"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive", "max-encoded-len"] }
 scale-info = { version = "2.0.0", default-features = false, features = ["derive"] }
 log = { version = "0.4.14", default-features = false }
 rustc-hex = { version = "2.1.0", default-features = false }
diff --git a/polkadot/runtime/rococo/Cargo.toml b/polkadot/runtime/rococo/Cargo.toml
index b121d31e83..ba955c2bb6 100644
--- a/polkadot/runtime/rococo/Cargo.toml
+++ b/polkadot/runtime/rococo/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2021"
 build = "build.rs"
 
 [dependencies]
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive", "max-encoded-len"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive", "max-encoded-len"] }
 scale-info = { version = "2.0.0", default-features = false, features = ["derive"] }
 serde = { version = "1.0.136", default-features = false }
 serde_derive = { version = "1.0.117", optional = true }
diff --git a/polkadot/runtime/test-runtime/Cargo.toml b/polkadot/runtime/test-runtime/Cargo.toml
index 9ca6ecf469..bc96a2bff1 100644
--- a/polkadot/runtime/test-runtime/Cargo.toml
+++ b/polkadot/runtime/test-runtime/Cargo.toml
@@ -7,7 +7,7 @@ build = "build.rs"
 
 [dependencies]
 bitvec = { version = "1.0.0", default-features = false, features = ["alloc"] }
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 log = { version = "0.4.14", default-features = false }
 rustc-hex = { version = "2.1.0", default-features = false }
 scale-info = { version = "2.0.0", default-features = false, features = ["derive"] }
diff --git a/polkadot/runtime/westend/Cargo.toml b/polkadot/runtime/westend/Cargo.toml
index ce9cd11354..bdc5443a45 100644
--- a/polkadot/runtime/westend/Cargo.toml
+++ b/polkadot/runtime/westend/Cargo.toml
@@ -7,7 +7,7 @@ build = "build.rs"
 
 [dependencies]
 bitvec = { version = "1.0.0", default-features = false, features = ["alloc"] }
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive", "max-encoded-len"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive", "max-encoded-len"] }
 scale-info = { version = "2.0.0", default-features = false, features = ["derive"] }
 log = { version = "0.4.14", default-features = false }
 rustc-hex = { version = "2.1.0", default-features = false }
diff --git a/polkadot/statement-table/Cargo.toml b/polkadot/statement-table/Cargo.toml
index 4ade5a9978..4a55da2293 100644
--- a/polkadot/statement-table/Cargo.toml
+++ b/polkadot/statement-table/Cargo.toml
@@ -5,6 +5,6 @@ authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2021"
 
 [dependencies]
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 sp-core = { git = "https://github.com/paritytech/substrate", branch = "master" }
 primitives = { package = "polkadot-primitives", path = "../primitives" }
diff --git a/polkadot/xcm/Cargo.toml b/polkadot/xcm/Cargo.toml
index 7be8f43d80..32fd1a48bc 100644
--- a/polkadot/xcm/Cargo.toml
+++ b/polkadot/xcm/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 
 [dependencies]
 impl-trait-for-tuples = "0.2.2"
-parity-scale-codec = { version = "3.0.0", default-features = false, features = [ "derive" ] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = [ "derive" ] }
 scale-info = { version = "2.0.0", default-features = false, features = ["derive"] }
 derivative = {version = "2.2.0", default-features = false, features = [ "use_core" ] }
 log = { version = "0.4.14", default-features = false }
diff --git a/polkadot/xcm/xcm-builder/Cargo.toml b/polkadot/xcm/xcm-builder/Cargo.toml
index 9c037f004d..47bd414db4 100644
--- a/polkadot/xcm/xcm-builder/Cargo.toml
+++ b/polkadot/xcm/xcm-builder/Cargo.toml
@@ -6,7 +6,7 @@ description = "Tools & types for building with XCM and its executor."
 version = "0.9.18"
 
 [dependencies]
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 scale-info = { version = "2.0.0", default-features = false, features = ["derive"] }
 xcm = { path = "..", default-features = false }
 xcm-executor = { path = "../xcm-executor", default-features = false }
diff --git a/polkadot/xcm/xcm-executor/Cargo.toml b/polkadot/xcm/xcm-executor/Cargo.toml
index d0dda50e6e..007a7e1aa9 100644
--- a/polkadot/xcm/xcm-executor/Cargo.toml
+++ b/polkadot/xcm/xcm-executor/Cargo.toml
@@ -7,7 +7,7 @@ version = "0.9.18"
 
 [dependencies]
 impl-trait-for-tuples = "0.2.2"
-parity-scale-codec = { version = "3.0.0", default-features = false, features = ["derive"] }
+parity-scale-codec = { version = "3.1.0", default-features = false, features = ["derive"] }
 xcm = { path = "..", default-features = false }
 sp-std = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 sp-io = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }