diff --git a/CHANGELOG.md b/CHANGELOG.md
index fea7ae3a..2a133b6c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## [1.15.1](https://github.com/google/adk-python/compare/v1.15.0...v1.15.1) (2025-09-26)
+
+### Bug Fixes
+
+* Fix the deployment failure for Agent Engine ([e172811](https://github.com/google/adk-python/commit/e172811bc7173b9004572f2a2afc7024145d7713))
+
 ## [1.15.0](https://github.com/google/adk-python/compare/v1.14.1...v1.15.0) (2025-09-24)
 
 ### Features
diff --git a/src/google/adk/version.py b/src/google/adk/version.py
index 1af63ac4..8a2607d6 100644
--- a/src/google/adk/version.py
+++ b/src/google/adk/version.py
@@ -13,4 +13,4 @@
 # limitations under the License.
 
 # version: major.minor.patch
-__version__ = "1.15.0"
+__version__ = "1.15.1"