diff --git a/Cargo.lock b/Cargo.lock
index 82878e94..130166a4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2837,9 +2837,9 @@ checksum = "6bdef32e8150c2a081110b42772ffe7d7c9032b606bc226c8260fd97e0976601"
 
 [[package]]
 name = "syn"
-version = "1.0.78"
+version = "1.0.80"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4eac2e6c19f5c3abc0c229bea31ff0b9b091c7b14990e8924b92902a303a0c0"
+checksum = "d010a1623fbd906d51d650a9916aaefc05ffa0e4053ff7fe601167f3e715d194"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/ethers-core/Cargo.toml b/ethers-core/Cargo.toml
index f6c55531..ac5fe4c6 100644
--- a/ethers-core/Cargo.toml
+++ b/ethers-core/Cargo.toml
@@ -35,7 +35,7 @@ once_cell = "1.8.0"
 
 # eip712 feature enabled dependencies
 convert_case = { version = "0.4.0", optional = true }
-syn = { version = "1.0.77", optional = true }
+syn = { version = "1.0.80", optional = true }
 quote = { version = "1.0.9", optional = true }
 proc-macro2 = { version = "1.0.29", optional = true }