diff --git a/.github/.release-please-manifest.json b/.github/.release-please-manifest.json
index f16e9b1aea..9a3ece4da7 100644
--- a/.github/.release-please-manifest.json
+++ b/.github/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.32.0"
+  ".": "1.33.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a57085d100..baa2a92d68 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,38 @@
 # Changelog
 
+## [1.33.0](https://github.com/google/adk-python/compare/v1.32.0...v1.33.0) (2026-05-08)
+
+
+### Features
+
+* add BufferableSessionService ([0bc767e](https://github.com/google/adk-python/commit/0bc767e6892742d6290d3445d028f95925187aed))
+* **apigee:** allow injecting credentials into ApigeeLlm ([ce578ff](https://github.com/google/adk-python/commit/ce578fffa0dc02b0033f7f5e705b9422cbd6c252))
+* Make ADK environment tools truncation limit configurable ([83ae405](https://github.com/google/adk-python/commit/83ae40525aa734f4a3b365614cce43831612a1ec))
+* **models:** add get_function_calls and get_function_responses to LlmResponse ([22fae7e](https://github.com/google/adk-python/commit/22fae7e9a09c581f433f3c51ea9a0ab26e689b92))
+
+
+### Bug Fixes
+
+* catch genai.ClientError when sandbox is missing ([69fa777](https://github.com/google/adk-python/commit/69fa777881b3cb161e5b3dcb005def9a2ad86904)), closes [#5480](https://github.com/google/adk-python/issues/5480)
+* double append bug ([f8b4c59](https://github.com/google/adk-python/commit/f8b4c59350fea3319c9e53e29968c56c93c57c99))
+* Filter out video events with inline data from being stored in session ([88421f8](https://github.com/google/adk-python/commit/88421f80a0b008e90f18401abca4ceec3548f6cd))
+* fix fork detection, correct offload limits, and add response logging in BigQuery plugin ([9d1bb4b](https://github.com/google/adk-python/commit/9d1bb4b4870233e574f5c06ddd2b62a48272398f))
+* hot reload agents for adk web ([740557c](https://github.com/google/adk-python/commit/740557c8965305abc75752082bc3ee63d924742f))
+* Only append skills to system instruction if ListSkillsTool isn't available ([01f1fc9](https://github.com/google/adk-python/commit/01f1fc9c912a97ff27bb1332a28324f991eae77d))
+* prevent state_delta overwrite on function_response-only events ([fc27203](https://github.com/google/adk-python/commit/fc2720378e8997269d30f5439051f5e43d5fa028), [211e2ce](https://github.com/google/adk-python/commit/211e2ceb70ac6b61400559761d1d6548d906a79b)), closes [#3178](https://github.com/google/adk-python/issues/3178)
+* Raise a clear actionable error when CustomAuthScheme lacks a registered AuthProvider ([83f9817](https://github.com/google/adk-python/commit/83f981761b963ca51a286cbd004c043567517a3c))
+* should use app_name instead of req.app_name ([8286066](https://github.com/google/adk-python/commit/8286066e71e5c07b5b28979b8327d4b330187ddd))
+* **simulation:** Add error message when LlmBackedUserSimulator returns empty response ([fb92aad](https://github.com/google/adk-python/commit/fb92aad9c53bb9f6706fb27751d71fcda2419500))
+* Update expressmode api call to include default api key param ([e833995](https://github.com/google/adk-python/commit/e8339953911a8b580cfc2d88c7008234a43beece))
+* use asyncio.sleep to avoid blocking event loop ([3a1eadc](https://github.com/google/adk-python/commit/3a1eadce66804db08f6520cc11f9c60e81bb9e30))
+* Use project and location instead of API key when deploying to agent engine ([398f28f](https://github.com/google/adk-python/commit/398f28feb47d87ec9c4c03dd3e0e7b87a1699e6e))
+
+
+### Code Refactoring
+
+* adjust computation of workflow.steps metric and add new unit tests ([03d6208](https://github.com/google/adk-python/commit/03d6208aacac8c19adec45ce0dd837f9e3a7f66f))
+* remove input.type and output.type attributes from adk metrics ([9559968](https://github.com/google/adk-python/commit/95599683230dd13e5792133f30ade3fe19358d52))
+
 ## [1.32.0](https://github.com/google/adk-python/compare/v1.31.0...v1.32.0) (2026-04-30)
 
 
diff --git a/src/google/adk/version.py b/src/google/adk/version.py
index 3a7e8f81b4..91b8650e52 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__ = "1.32.0"
+__version__ = "1.33.0"