diff --git a/Cargo.toml b/Cargo.toml
index f62f106c7e..ab148fe22d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -57,7 +57,7 @@ jsonrpsee = { version = "0.16" }
 pretty_assertions = "1.4.0"
 primitive-types = { version = "0.12.1", default-features = false, features = ["codec", "scale-info", "serde"] }
 proc-macro-error = "1.0.4"
-proc-macro2 = "1.0.63"
+proc-macro2 = "1.0.66"
 quote = "1.0.31"
 regex = "1.9.1"
 scale-info = "2.9.0"