diff --git a/bridges/relays/ethereum/Cargo.toml b/bridges/relays/ethereum/Cargo.toml
index 8b467e0c6f..027d471e69 100644
--- a/bridges/relays/ethereum/Cargo.toml
+++ b/bridges/relays/ethereum/Cargo.toml
@@ -27,7 +27,7 @@ parity-crypto = { version = "0.6", features = ["publickey"] }
 parking_lot = "0.11.0"
 rustc-hex = "2.0.1"
 serde = { version = "1.0", features = ["derive"] }
-serde_json = "1.0.56"
+serde_json = "1.0.57"
 sysinfo = "0.15"
 sp-bridge-eth-poa = { path = "../../primitives/ethereum-poa" }
 time = "0.2"
diff --git a/bridges/relays/substrate/Cargo.toml b/bridges/relays/substrate/Cargo.toml
index 83f191af1e..8ee475be61 100644
--- a/bridges/relays/substrate/Cargo.toml
+++ b/bridges/relays/substrate/Cargo.toml
@@ -14,7 +14,7 @@ env_logger = "0.7.1"
 futures = "0.3.5"
 jsonrpsee = { git = "https://github.com/paritytech/jsonrpsee", features = ["ws"] }
 log = "0.4.11"
-serde_json = "1.0.56"
+serde_json = "1.0.57"
 url = "2.1.0"
 
 [dependencies.sp-core]