diff --git a/cumulus/Cargo.lock b/cumulus/Cargo.lock
index c2b5b57154..951d07e5e6 100644
--- a/cumulus/Cargo.lock
+++ b/cumulus/Cargo.lock
@@ -6841,9 +6841,9 @@ 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",
@@ -6855,9 +6855,9 @@ 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/cumulus/client/relay-chain-interface/Cargo.toml b/cumulus/client/relay-chain-interface/Cargo.toml
index 8725e8c28b..64c0aee8cc 100644
--- a/cumulus/client/relay-chain-interface/Cargo.toml
+++ b/cumulus/client/relay-chain-interface/Cargo.toml
@@ -24,4 +24,4 @@ derive_more = "0.99.2"
 async-trait = "0.1.52"
 thiserror = "1.0.30"
 jsonrpsee-core = "0.9.0"
-parity-scale-codec = "3.0.0"
+parity-scale-codec = "3.1.0"
diff --git a/cumulus/client/relay-chain-rpc-interface/Cargo.toml b/cumulus/client/relay-chain-rpc-interface/Cargo.toml
index 1b9e038c0b..09422c093b 100644
--- a/cumulus/client/relay-chain-rpc-interface/Cargo.toml
+++ b/cumulus/client/relay-chain-rpc-interface/Cargo.toml
@@ -21,7 +21,7 @@ sc-rpc-api = { git = "https://github.com/paritytech/substrate", branch = "master
 
 futures = "0.3.21"
 futures-timer = "3.0.2"
-parity-scale-codec = "3.0.0"
+parity-scale-codec = "3.1.0"
 parking_lot = "0.12.0"
 jsonrpsee = { version = "0.9.0", features = ["client"] }
 tracing = "0.1.32"
diff --git a/cumulus/pallets/session-benchmarking/Cargo.toml b/cumulus/pallets/session-benchmarking/Cargo.toml
index 70bb01b3c0..afbf0fbd03 100644
--- a/cumulus/pallets/session-benchmarking/Cargo.toml
+++ b/cumulus/pallets/session-benchmarking/Cargo.toml
@@ -13,7 +13,7 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-parity-scale-codec = { version = "3.0.0", default-features = false }
+parity-scale-codec = { version = "3.1.0", default-features = false }
 sp-std = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "master" }
 sp-runtime = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "master" }
 frame-support = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "master" }