diff --git a/polkadot/Cargo.lock b/polkadot/Cargo.lock
index 1546e53931..d66e9061f0 100644
--- a/polkadot/Cargo.lock
+++ b/polkadot/Cargo.lock
@@ -9834,9 +9834,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.79"
+version = "1.0.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e8d9fa5c3b304765ce1fd9c4c8a3de2c8db365a5b91be52f186efc675681d95"
+checksum = "9b7ce2b32a1aed03c558dc61a5cd328f15aff2dbc17daad8fb8af04d2100e15c"
 dependencies = [
  "itoa 1.0.1",
  "ryu",
diff --git a/polkadot/node/service/Cargo.toml b/polkadot/node/service/Cargo.toml
index 632dc429f7..99bc24fe00 100644
--- a/polkadot/node/service/Cargo.toml
+++ b/polkadot/node/service/Cargo.toml
@@ -65,7 +65,7 @@ futures = "0.3.21"
 hex-literal = "0.3.4"
 gum = { package = "tracing-gum", path = "../gum/" }
 serde = { version = "1.0.137", features = ["derive"] }
-serde_json = "1.0.59"
+serde_json = "1.0.81"
 thiserror = "1.0.31"
 kvdb = "0.11.0"
 kvdb-rocksdb = { version = "0.15.2", optional = true }
diff --git a/polkadot/node/test/service/Cargo.toml b/polkadot/node/test/service/Cargo.toml
index d4f735f983..a0f521b882 100644
--- a/polkadot/node/test/service/Cargo.toml
+++ b/polkadot/node/test/service/Cargo.toml
@@ -59,7 +59,7 @@ substrate-test-client = { git = "https://github.com/paritytech/substrate", branc
 
 [dev-dependencies]
 pallet-balances = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
-serde_json = "1.0.79"
+serde_json = "1.0.81"
 substrate-test-utils = { git = "https://github.com/paritytech/substrate", branch = "master" }
 tokio = { version = "1.18.1", features = ["macros"] }
 
diff --git a/polkadot/runtime/common/Cargo.toml b/polkadot/runtime/common/Cargo.toml
index 4149fc03a9..4cb9c8e4e4 100644
--- a/polkadot/runtime/common/Cargo.toml
+++ b/polkadot/runtime/common/Cargo.toml
@@ -58,7 +58,7 @@ pallet-babe = { git = "https://github.com/paritytech/substrate", branch = "maste
 pallet-treasury = { git = "https://github.com/paritytech/substrate", branch = "master" }
 sp-keystore = { git = "https://github.com/paritytech/substrate", branch = "master" }
 trie-db = "0.23.1"
-serde_json = "1.0.79"
+serde_json = "1.0.81"
 libsecp256k1 = "0.7.0"
 test-helpers = { package = "polkadot-primitives-test-helpers", path = "../../primitives/test-helpers" }
 
diff --git a/polkadot/runtime/kusama/Cargo.toml b/polkadot/runtime/kusama/Cargo.toml
index ac1979dbe1..e7cfa456e7 100644
--- a/polkadot/runtime/kusama/Cargo.toml
+++ b/polkadot/runtime/kusama/Cargo.toml
@@ -103,7 +103,7 @@ tiny-keccak = "2.0.2"
 keyring = { package = "sp-keyring", git = "https://github.com/paritytech/substrate", branch = "master" }
 sp-trie = { git = "https://github.com/paritytech/substrate", branch = "master" }
 separator = "0.4.1"
-serde_json = "1.0.79"
+serde_json = "1.0.81"
 
 [build-dependencies]
 substrate-wasm-builder = { git = "https://github.com/paritytech/substrate", branch = "master" }
diff --git a/polkadot/runtime/polkadot/Cargo.toml b/polkadot/runtime/polkadot/Cargo.toml
index 6ab45c3579..0663351b68 100644
--- a/polkadot/runtime/polkadot/Cargo.toml
+++ b/polkadot/runtime/polkadot/Cargo.toml
@@ -96,7 +96,7 @@ tiny-keccak = "2.0.2"
 keyring = { package = "sp-keyring", git = "https://github.com/paritytech/substrate", branch = "master" }
 sp-trie = { git = "https://github.com/paritytech/substrate", branch = "master" }
 trie-db = "0.23.1"
-serde_json = "1.0.79"
+serde_json = "1.0.81"
 separator = "0.4.1"
 
 [build-dependencies]
diff --git a/polkadot/runtime/test-runtime/Cargo.toml b/polkadot/runtime/test-runtime/Cargo.toml
index fa1a4eb206..f004851e45 100644
--- a/polkadot/runtime/test-runtime/Cargo.toml
+++ b/polkadot/runtime/test-runtime/Cargo.toml
@@ -69,7 +69,7 @@ hex-literal = "0.3.4"
 tiny-keccak = "2.0.2"
 keyring = { package = "sp-keyring", git = "https://github.com/paritytech/substrate", branch = "master" }
 sp-trie = { git = "https://github.com/paritytech/substrate", branch = "master" }
-serde_json = "1.0.79"
+serde_json = "1.0.81"
 
 [build-dependencies]
 substrate-wasm-builder = { git = "https://github.com/paritytech/substrate", branch = "master" }
diff --git a/polkadot/runtime/westend/Cargo.toml b/polkadot/runtime/westend/Cargo.toml
index efc26ad206..96a14ccb3d 100644
--- a/polkadot/runtime/westend/Cargo.toml
+++ b/polkadot/runtime/westend/Cargo.toml
@@ -98,7 +98,7 @@ hex-literal = "0.3.4"
 tiny-keccak = "2.0.2"
 keyring = { package = "sp-keyring", git = "https://github.com/paritytech/substrate", branch = "master" }
 sp-trie = { git = "https://github.com/paritytech/substrate", branch = "master" }
-serde_json = "1.0.79"
+serde_json = "1.0.81"
 
 [build-dependencies]
 substrate-wasm-builder = { git = "https://github.com/paritytech/substrate", branch = "master" }