diff --git a/Cargo.lock b/Cargo.lock
index 90ade69221..9e312fbd76 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -8499,9 +8499,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.39"
+version = "1.0.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c54b25569025b7fc9651de43004ae593a75ad88543b17178aa5e1b9c4f15f56f"
+checksum = "dd96a1e8ed2596c337f8eae5f24924ec83f5ad5ab21ea8e455d3566c69fbcaf7"
 dependencies = [
  "unicode-ident",
 ]
diff --git a/pallets/parachain-system/proc-macro/Cargo.toml b/pallets/parachain-system/proc-macro/Cargo.toml
index d27ca0d9b9..c4d285390c 100644
--- a/pallets/parachain-system/proc-macro/Cargo.toml
+++ b/pallets/parachain-system/proc-macro/Cargo.toml
@@ -10,7 +10,7 @@ proc-macro = true
 
 [dependencies]
 syn = "1.0.96"
-proc-macro2 = "1.0.39"
+proc-macro2 = "1.0.40"
 quote = "1.0.18"
 proc-macro-crate = "1.1.3"