diff --git a/Cargo.lock b/Cargo.lock
index ecd723943709..fea000bcab81 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2574,7 +2574,7 @@ checksum = "1323096b05d41827dadeaee54c9981958c0f94e670bc94ed80037d1a7b8b186b"
 dependencies = [
  "bytes 1.1.0",
  "fnv",
- "itoa",
+ "itoa 0.4.8",
 ]
 
 [[package]]
@@ -2630,7 +2630,7 @@ dependencies = [
  "http-body",
  "httparse",
  "httpdate",
- "itoa",
+ "itoa 0.4.8",
  "pin-project-lite 0.2.7",
  "socket2 0.4.2",
  "tokio",
@@ -2862,6 +2862,12 @@ version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b71991ff56294aa922b450139ee08b3bfc70982c6b2c7562771375cf73542dd4"
 
+[[package]]
+name = "itoa"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1aab8fc367588b89dcee83ab0fd66b72b50b72fa1904d7095045ace2b0c81c35"
+
 [[package]]
 name = "jobserver"
 version = "0.1.24"
@@ -4407,7 +4413,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bafe4179722c2894288ee77a9f044f02811c86af699344c498b0840c698a2465"
 dependencies = [
  "arrayvec 0.4.12",
- "itoa",
+ "itoa 0.4.8",
 ]
 
 [[package]]
@@ -4499,7 +4505,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7337d80c23c2d8b1349563981bc4fb531220733743ba8115454a67b181173f0d"
 dependencies = [
  "dtoa",
- "itoa",
+ "itoa 0.4.8",
  "open-metrics-client-derive-text-encode",
  "owning_ref",
 ]
@@ -7954,7 +7960,7 @@ dependencies = [
  "cc",
  "errno",
  "io-lifetimes",
- "itoa",
+ "itoa 0.4.8",
  "libc",
  "linux-raw-sys",
  "once_cell",
@@ -9187,11 +9193,11 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.72"
+version = "1.0.73"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d0ffa0837f2dfa6fb90868c2b5468cad482e175f7dad97e7421951e663f2b527"
+checksum = "bcbd0344bc6533bc7ec56df11d42fb70f1b912351c0825ccb7211b59d8af7cf5"
 dependencies = [
- "itoa",
+ "itoa 1.0.1",
  "ryu",
  "serde",
 ]
diff --git a/node/test/service/Cargo.toml b/node/test/service/Cargo.toml
index ae950143f976..2cf7362ae14b 100644
--- a/node/test/service/Cargo.toml
+++ b/node/test/service/Cargo.toml
@@ -59,6 +59,6 @@ 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 = "1.0.72"
+serde_json = "1.0.73"
 substrate-test-utils = { git = "https://github.com/paritytech/substrate", branch = "master" }
 tokio = { version = "1.14", features = ["macros"] }
diff --git a/runtime/common/Cargo.toml b/runtime/common/Cargo.toml
index dceafd340db0..3ba50ba42b89 100644
--- a/runtime/common/Cargo.toml
+++ b/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 = "1.0.72"
+serde_json = "1.0.73"
 libsecp256k1 = "0.7.0"
 test-helpers = { package = "polkadot-primitives-test-helpers", path = "../../primitives/test-helpers" }
 
diff --git a/runtime/kusama/Cargo.toml b/runtime/kusama/Cargo.toml
index d20f3335257c..b5dd860d6fc6 100644
--- a/runtime/kusama/Cargo.toml
+++ b/runtime/kusama/Cargo.toml
@@ -98,7 +98,7 @@ 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 = "1.0.72"
+serde_json = "1.0.73"
 
 [build-dependencies]
 substrate-wasm-builder = { git = "https://github.com/paritytech/substrate", branch = "master" }
diff --git a/runtime/polkadot/Cargo.toml b/runtime/polkadot/Cargo.toml
index ee02c0b4b090..8fb6586353b0 100644
--- a/runtime/polkadot/Cargo.toml
+++ b/runtime/polkadot/Cargo.toml
@@ -94,7 +94,7 @@ 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 = "1.0.72"
+serde_json = "1.0.73"
 separator = "0.4.1"
 
 [build-dependencies]
diff --git a/runtime/test-runtime/Cargo.toml b/runtime/test-runtime/Cargo.toml
index f85c31fc82a5..891c2d038e4c 100644
--- a/runtime/test-runtime/Cargo.toml
+++ b/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 = "1.0.72"
+serde_json = "1.0.73"
 
 [build-dependencies]
 substrate-wasm-builder = { git = "https://github.com/paritytech/substrate", branch = "master" }
diff --git a/runtime/westend/Cargo.toml b/runtime/westend/Cargo.toml
index 336515713738..c4bd0da416c4 100644
--- a/runtime/westend/Cargo.toml
+++ b/runtime/westend/Cargo.toml
@@ -95,7 +95,7 @@ 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 = "1.0.72"
+serde_json = "1.0.73"
 
 [build-dependencies]
 substrate-wasm-builder = { git = "https://github.com/paritytech/substrate", branch = "master" }