diff --git a/bridges/relays/ethereum/Cargo.toml b/bridges/relays/ethereum/Cargo.toml
index d731e2b08d3a3..06b29e7e8effc 100644
--- a/bridges/relays/ethereum/Cargo.toml
+++ b/bridges/relays/ethereum/Cargo.toml
@@ -18,7 +18,7 @@ log = "0.4.8"
 parking_lot = "0.10.0"
 rustc-hex = "2.0.1"
 serde = { version = "1.0.106", features = ["derive"] }
-serde_json = "1.0.50"
+serde_json = "1.0.51"
 sp-bridge-eth-poa = { path = "../../primitives/ethereum-poa" }
 time = "0.2"
 web3 = { git = "https://github.com/svyatonik/rust-web3.git", branch = "fix_receipt" }
diff --git a/bridges/relays/substrate/Cargo.toml b/bridges/relays/substrate/Cargo.toml
index cd1408b5997c9..51c197e7f5c1b 100644
--- a/bridges/relays/substrate/Cargo.toml
+++ b/bridges/relays/substrate/Cargo.toml
@@ -13,7 +13,7 @@ env_logger = "0.7.1"
 futures = "0.3.1"
 jsonrpsee = { git = "https://github.com/paritytech/jsonrpsee", features = ["ws"] }
 log = "0.4.8"
-serde_json = "1.0.50"
+serde_json = "1.0.51"
 url = "2.1.0"
 
 [dependencies.sp-core]