diff --git a/Cargo.lock b/Cargo.lock
index c63bd257..9629a335 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2880,9 +2880,9 @@ checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.42"
+version = "1.0.43"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c278e965f1d8cf32d6e0e96de3d3e79712178ae67986d9cf9151f51e95aac89b"
+checksum = "0a2ca2c61bc9f3d74d2886294ab7b9853abd9c1ad903a3ac7815c58989bb7bab"
 dependencies = [
  "unicode-ident",
 ]
diff --git a/ethers-core/Cargo.toml b/ethers-core/Cargo.toml
index e9f2aa25..fce5d5e5 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 = "0.5.0", optional = true }
 syn = { version = "1.0.99", optional = true }
-proc-macro2 = { version = "1.0.42", optional = true }
+proc-macro2 = { version = "1.0.43", optional = true }
 rust_decimal = "1.25.0"
 
 [dev-dependencies]