diff --git a/CHANGELOG.md b/CHANGELOG.md
index dc988648..13679bf0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,14 @@
 
 [1]: https://pypi.org/project/google-cloud-container/#history
 
+## [2.6.0](https://www.github.com/googleapis/python-container/compare/v2.5.0...v2.6.0) (2021-07-09)
+
+
+### Features
+
+* allow updating security group on existing clusters ([#120](https://www.github.com/googleapis/python-container/issues/120)) ([28a3fc9](https://www.github.com/googleapis/python-container/commit/28a3fc94cd7587b5900408bbadf994f143b0d0c3))
+* allow updating security group on existing clusters ([#123](https://www.github.com/googleapis/python-container/issues/123)) ([e0d70e9](https://www.github.com/googleapis/python-container/commit/e0d70e98991eec24880497516829a0d4ed1dbc18))
+
 ## [2.5.0](https://www.github.com/googleapis/python-container/compare/v2.4.1...v2.5.0) (2021-06-30)
 
 
diff --git a/setup.py b/setup.py
index 206956c8..e7de00d2 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@
 
 name = "google-cloud-container"
 description = "Google Container Engine API client library"
-version = "2.5.0"
+version = "2.6.0"
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'