diff --git a/Cargo.lock b/Cargo.lock
index 811c9c81..b3ff08e5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4158,9 +4158,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.108"
+version = "1.0.109"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d56e159d99e6c2b93995d171050271edb50ecc5288fbc7cc17de8fdce4e58c14"
+checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/ethers-core/Cargo.toml b/ethers-core/Cargo.toml
index 3e340807..d95a662a 100644
--- a/ethers-core/Cargo.toml
+++ b/ethers-core/Cargo.toml
@@ -40,7 +40,7 @@ cargo_metadata = { version = "0.15.3", optional = true }
 
 # eip712 feature enabled dependencies
 convert_case = { version = "0.6.0", optional = true }
-syn = { version = "1.0.108", optional = true }
+syn = { version = "1.0.109", optional = true }
 proc-macro2 = { version = "1.0.51", optional = true }
 num_enum = "0.5.11"