diff --git a/CHANGELOG.md b/CHANGELOG.md
index a06cedef6..b3a5503a8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## [2.21.0](https://github.com/googleapis/python-genai/compare/v2.20.0...v2.21.0) (2026-08-28)
+
+
+### Features
+
+* Add destination parameter to client.files.download to support streaming downloads to disk or file-like objects ([fcf9e3f](https://github.com/googleapis/python-genai/commit/fcf9e3fe8bdf9cc18a09a7fff3d65742913a6b06))
+* Add Video Understanding support to the Interactions API ([2cc99a9](https://github.com/googleapis/python-genai/commit/2cc99a9b365bda40ad60da33b206a31c096a79c5))
+
+
+### Bug Fixes
+
+* Expose ProcessingCallStep and ProcessingResultStep in Interactions SDK ([df0ab55](https://github.com/googleapis/python-genai/commit/df0ab55c09994da4de26ad3038f206fc986ced3a))
+
 ## [2.20.0](https://github.com/googleapis/python-genai/compare/v2.19.0...v2.20.0) (2026-08-25)
 
 
diff --git a/google/genai/version.py b/google/genai/version.py
index ce8c0efd4..c7985cd85 100644
--- a/google/genai/version.py
+++ b/google/genai/version.py
@@ -13,4 +13,4 @@
 # limitations under the License.
 #
 
-__version__ = '2.20.0' # x-release-please-version
+__version__ = '2.21.0' # x-release-please-version
diff --git a/pyproject.toml b/pyproject.toml
index 10a794bc7..ec7d6d27e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ requires = ["setuptools", "wheel", "twine>=6.1.0", "packaging>=24.2", "pkginfo>=
 
 [project]
 name = "google-genai"
-version = "2.20.0"
+version = "2.21.0"
 description = "GenAI Python SDK"
 readme = "README.md"
 license = "Apache-2.0"