diff --git a/.changeset/selfish-cheetahs-guess.md b/.changeset/selfish-cheetahs-guess.md
new file mode 100644
index 00000000000..5a0bafa865f
--- /dev/null
+++ b/.changeset/selfish-cheetahs-guess.md
@@ -0,0 +1,5 @@
+---
+"@smithy/core": minor
+---
+
+updating errors list for clock skew errors (retryable)
diff --git a/packages/core/src/submodules/retry/service-error-classification/constants.ts b/packages/core/src/submodules/retry/service-error-classification/constants.ts
index 5aecfce3624..aa9167a7c9c 100644
--- a/packages/core/src/submodules/retry/service-error-classification/constants.ts
+++ b/packages/core/src/submodules/retry/service-error-classification/constants.ts
@@ -4,8 +4,10 @@
  *
  * These errors are retryable, assuming the SDK has enabled clock skew
  * correction.
+ *
  */
 export const CLOCK_SKEW_ERROR_CODES = [
+  "AccessDeniedException",
   "AuthFailure",
   "InvalidSignatureException",
   "RequestExpired",