diff --git a/Cargo.lock b/Cargo.lock
index 75c573c4..b487238f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3443,9 +3443,9 @@ dependencies = [
 
 [[package]]
 name = "serde-aux"
-version = "3.1.0"
+version = "4.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d0a77223b653fa95f3f9864f3eb25b93e4ed170687eb42d85b6b98af21d5e1de"
+checksum = "c79c1a5a310c28bf9f7a4b9bd848553051120d80a5952f993c7eb62f6ed6e4c5"
 dependencies = [
  "serde",
  "serde_json",
diff --git a/ethers-etherscan/Cargo.toml b/ethers-etherscan/Cargo.toml
index 6f551cbd..9470bfd7 100644
--- a/ethers-etherscan/Cargo.toml
+++ b/ethers-etherscan/Cargo.toml
@@ -18,7 +18,7 @@ ethers-core = { version = "^0.17.0", path = "../ethers-core", default-features =
 reqwest = { version = "0.11.11", default-features = false, features = ["json"] }
 serde = { version = "1.0.124", default-features = false, features = ["derive"] }
 serde_json = { version = "1.0.64", default-features = false }
-serde-aux = { version = "3.1.0", default-features = false }
+serde-aux = { version = "4.0.0", default-features = false }
 thiserror = "1.0"
 tracing = "0.1.36"
 semver = "1.0.13"