diff --git a/Cargo.lock b/Cargo.lock
index 129e3bb8..dd33dcab 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3812,9 +3812,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.99"
+version = "1.0.100"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "58dbef6ec655055e20b86b15a8cc6d439cca19b667537ac6a1369572d151ab13"
+checksum = "52205623b1b0f064a4e71182c3b18ae902267282930c6d5462c91b859668426e"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/ethers-core/Cargo.toml b/ethers-core/Cargo.toml
index 4d13d1d1..b2f0ef27 100644
--- a/ethers-core/Cargo.toml
+++ b/ethers-core/Cargo.toml
@@ -40,7 +40,7 @@ cargo_metadata = { version = "0.15.0", optional = true }
 
 # eip712 feature enabled dependencies
 convert_case = { version = "0.6.0", optional = true }
-syn = { version = "1.0.99", optional = true }
+syn = { version = "1.0.100", optional = true }
 proc-macro2 = { version = "1.0.43", optional = true }
 rust_decimal = { version = "1.26.1", features = ["maths"] }