diff --git a/Cargo.toml b/Cargo.toml
index ea21d9af17..65949c7131 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -45,7 +45,7 @@ criterion = "0.4"
 codec = { package = "parity-scale-codec", version = "3.4.0", default-features = false }
 color-eyre = "0.6.1"
 console_error_panic_hook = "0.1.7"
-darling = "0.20.0"
+darling = "0.20.3"
 derivative = "2.2.0"
 either = "1.8.1"
 frame-metadata = { version = "16.0.0", default-features = false, features = ["current", "std"] }