diff --git a/scripts/generate-clients/config.js b/scripts/generate-clients/config.js
index 00a770a04545..3183de50d062 100644
--- a/scripts/generate-clients/config.js
+++ b/scripts/generate-clients/config.js
@@ -1,7 +1,7 @@
 // Update this commit when taking up new changes from smithy-typescript.
 module.exports = {
   // Use full commit hash as we explicitly fetch it.
-  SMITHY_TS_COMMIT: "1db3e9f3afdd5f1b188e1d8f1c079ccafaf5860b",
+  SMITHY_TS_COMMIT: "ef8d8253337bd98c5b4ce3d62ded633b4efddafa",
 };
 
 if (module.exports.SMITHY_TS_COMMIT.length < 40) {