diff --git a/codegen/CHANGELOG.md b/codegen/CHANGELOG.md
index cdd17cec1c61..95d650575bc5 100644
--- a/codegen/CHANGELOG.md
+++ b/codegen/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Smithy AWS Typescript Codegen Changelog
 
+## 0.29.0 (2025-04-11)
+
+## Features
+- Upgraded to smithy-typescript 0.29.0 ([Release Notes](https://github.com/smithy-lang/smithy-typescript/blob/main/CHANGELOG.md#0290-2025-04-11))
+- Upgraded to smithy 1.55.0 ([#7005](https://github.com/aws/aws-sdk-js-v3/pull/7005))
+
 ## 0.28.0 (2025-04-01)
 
 ## Features
diff --git a/codegen/build.gradle.kts b/codegen/build.gradle.kts
index 637e50854ce1..cf71f632e423 100644
--- a/codegen/build.gradle.kts
+++ b/codegen/build.gradle.kts
@@ -31,7 +31,7 @@ allprojects {
         mavenCentral()
     }
     group = "software.amazon.smithy.typescript"
-    version = "0.28.0"
+    version = "0.29.0"
 }
 
 // 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 f5659c37b57f..8c47e25396ab 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:0.28.0")
+    api("software.amazon.smithy.typescript:smithy-typescript-codegen:0.29.0")
 
     // 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 ab09e42a5cf0..1ca33c61e373 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: "b6ea624fe35457359cad061b908e980b455c9720",
+  SMITHY_TS_COMMIT: "8dec1794d4e0368417ba52ba0a05c5f08eb6348c",
 };
 
 if (module.exports.SMITHY_TS_COMMIT.length < 40) {