diff --git a/Cargo.lock b/Cargo.lock
index 46f8c454..261d2f1c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2149,9 +2149,9 @@ dependencies = [
 
 [[package]]
 name = "serde-aux"
-version = "2.1.1"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0162d500b846a7b331e583abaaa9c5c63c5777aa515dda3567c410ba243ce8be"
+checksum = "77eb8c83f6ebaedf5e8f970a8a44506b180b8e6268de03885c8547031ccaee00"
 dependencies = [
  "serde",
  "serde_json",
diff --git a/ethers-middleware/Cargo.toml b/ethers-middleware/Cargo.toml
index 3036d8b6..30355cab 100644
--- a/ethers-middleware/Cargo.toml
+++ b/ethers-middleware/Cargo.toml
@@ -27,7 +27,7 @@ tracing = { version = "0.1.25", default-features = false }
 tracing-futures = { version = "0.2.5", default-features = false }
 
 # for gas oracles
-serde-aux = { version = "2.1.0", default-features = false }
+serde-aux = { version = "2.2.0", default-features = false }
 reqwest = { version = "0.11.3", default-features = false, features = ["json", "rustls-tls"] }
 url = { version = "2.2.1", default-features = false }