diff --git a/bridges/bin/millau/runtime/Cargo.toml b/bridges/bin/millau/runtime/Cargo.toml
index eb37ea473f..65ea06963c 100644
--- a/bridges/bin/millau/runtime/Cargo.toml
+++ b/bridges/bin/millau/runtime/Cargo.toml
@@ -10,7 +10,7 @@ license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 [dependencies]
 codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 hex-literal = "0.3"
-serde = { version = "1.0.115", optional = true, features = ["derive"] }
+serde = { version = "1.0.117", optional = true, features = ["derive"] }
 
 # Bridge dependencies
 
diff --git a/bridges/bin/rialto/runtime/Cargo.toml b/bridges/bin/rialto/runtime/Cargo.toml
index fc7058f010..1cda71cf9e 100644
--- a/bridges/bin/rialto/runtime/Cargo.toml
+++ b/bridges/bin/rialto/runtime/Cargo.toml
@@ -11,7 +11,7 @@ license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 hex-literal = "0.3"
 libsecp256k1 = { version = "0.3.4", optional = true, default-features = false, features = ["hmac"] }
-serde = { version = "1.0.115", optional = true, features = ["derive"] }
+serde = { version = "1.0.117", optional = true, features = ["derive"] }
 
 # Bridge dependencies