diff --git a/codegen/build.gradle.kts b/codegen/build.gradle.kts
index b46b9e7e5854..6995aa6ced20 100644
--- a/codegen/build.gradle.kts
+++ b/codegen/build.gradle.kts
@@ -31,7 +31,7 @@ allprojects {
         mavenCentral()
     }
     group = "software.amazon.smithy.typescript"
-    version = "0.21.0"
+    version = "0.21.1"
 }
 
 // The root project doesn't produce a JAR.
diff --git a/codegen/smithy-aws-typescript-codegen/build.gradle.kts b/codegen/smithy-aws-typescript-codegen/build.gradle.kts
index 05e6c33b5bc7..8cec21818c74 100644
--- a/codegen/smithy-aws-typescript-codegen/build.gradle.kts
+++ b/codegen/smithy-aws-typescript-codegen/build.gradle.kts
@@ -36,7 +36,7 @@ buildscript {
 
 dependencies {
     // Smithy TypeScript
-    api("software.amazon.smithy.typescript:smithy-typescript-codegen:0.21.0")
+    api("software.amazon.smithy.typescript:smithy-typescript-codegen:0.21.1")
 
     // Smithy generic dependencies
     api("software.amazon.smithy:smithy-model:$smithyVersion")
diff --git a/scripts/generate-clients/config.js b/scripts/generate-clients/config.js
index 76d8b50fe365..84470d9cda45 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: "3798bc15d1af6facaae87ad610986e973336febc",
+  SMITHY_TS_COMMIT: "cf9d6fe3483ba027f98e87d1921c32dd94e2c1f9",
 };
 
 if (module.exports.SMITHY_TS_COMMIT.length < 40) {