diff --git a/polkadot/Cargo.lock b/polkadot/Cargo.lock
index ee5a7896a1..9fe586b0d8 100644
--- a/polkadot/Cargo.lock
+++ b/polkadot/Cargo.lock
@@ -9298,9 +9298,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.71"
+version = "1.0.72"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "063bf466a64011ac24040a49009724ee60a57da1b437617ceb32e53ad61bfb19"
+checksum = "d0ffa0837f2dfa6fb90868c2b5468cad482e175f7dad97e7421951e663f2b527"
 dependencies = [
  "itoa",
  "ryu",
diff --git a/polkadot/node/test/service/Cargo.toml b/polkadot/node/test/service/Cargo.toml
index b252f50a98..307a099e2b 100644
--- a/polkadot/node/test/service/Cargo.toml
+++ b/polkadot/node/test/service/Cargo.toml
@@ -58,6 +58,6 @@ 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 = "1.0.71"
+serde_json = "1.0.72"
 substrate-test-utils = { git = "https://github.com/paritytech/substrate", branch = "master" }
 tokio = { version = "1.14", features = ["macros"] }
diff --git a/polkadot/runtime/common/Cargo.toml b/polkadot/runtime/common/Cargo.toml
index c8acef4673..a6e9515e42 100644
--- a/polkadot/runtime/common/Cargo.toml
+++ b/polkadot/runtime/common/Cargo.toml
@@ -57,7 +57,7 @@ frame-support-test = { git = "https://github.com/paritytech/substrate", branch =
 pallet-babe = { git = "https://github.com/paritytech/substrate", branch = "master" }
 pallet-treasury = { git = "https://github.com/paritytech/substrate", branch = "master" }
 sp-keystore = { git = "https://github.com/paritytech/substrate", branch = "master" }
-serde_json = "1.0.71"
+serde_json = "1.0.72"
 libsecp256k1 = "0.7.0"
 
 [features]
diff --git a/polkadot/runtime/kusama/Cargo.toml b/polkadot/runtime/kusama/Cargo.toml
index 284cec579f..6f03e597e6 100644
--- a/polkadot/runtime/kusama/Cargo.toml
+++ b/polkadot/runtime/kusama/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" }
 separator = "0.4.1"
-serde_json = "1.0.71"
+serde_json = "1.0.72"
 
 [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 f011063726..0768d0e630 100644
--- a/polkadot/runtime/polkadot/Cargo.toml
+++ b/polkadot/runtime/polkadot/Cargo.toml
@@ -92,7 +92,7 @@ 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 = "0.22.3"
-serde_json = "1.0.71"
+serde_json = "1.0.72"
 separator = "0.4.1"
 
 [build-dependencies]
diff --git a/polkadot/runtime/test-runtime/Cargo.toml b/polkadot/runtime/test-runtime/Cargo.toml
index dcc295c32d..16857d41ef 100644
--- a/polkadot/runtime/test-runtime/Cargo.toml
+++ b/polkadot/runtime/test-runtime/Cargo.toml
@@ -68,7 +68,7 @@ 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 = "1.0.71"
+serde_json = "1.0.72"
 
 [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 f999b64f22..68de28cf25 100644
--- a/polkadot/runtime/westend/Cargo.toml
+++ b/polkadot/runtime/westend/Cargo.toml
@@ -93,7 +93,7 @@ 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 = "1.0.71"
+serde_json = "1.0.72"
 
 [build-dependencies]
 substrate-wasm-builder = { git = "https://github.com/paritytech/substrate", branch = "master" }