diff --git a/CHANGELOG.md b/CHANGELOG.md
index 00a8aae50..57732bacf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,37 @@
 [1]: https://pypi.org/project/google-cloud-pubsub/#history
 
 
+## [2.10.0](https://github.com/googleapis/python-pubsub/compare/v2.9.0...v2.10.0) (2022-03-04)
+
+
+### Features
+
+* add api key support ([#571](https://github.com/googleapis/python-pubsub/issues/571)) ([cdda762](https://github.com/googleapis/python-pubsub/commit/cdda762f6d15d96f5e2d7fac975f3494dc49eaa9))
+* add exactly once delivery flag ([#577](https://github.com/googleapis/python-pubsub/issues/577)) ([d6614e2](https://github.com/googleapis/python-pubsub/commit/d6614e274328c58449e67dfc788e2e7986c0c10b))
+* add support for exactly once delivery ([#578](https://github.com/googleapis/python-pubsub/issues/578)) ([95a86fa](https://github.com/googleapis/python-pubsub/commit/95a86fa5f528701b760064f0cece0efa4e60cd44))
+* exactly-once delivery support ([#550](https://github.com/googleapis/python-pubsub/issues/550)) ([2fb6e15](https://github.com/googleapis/python-pubsub/commit/2fb6e1533192ae81dceee5c71283169a0a85a015))
+
+
+### Bug Fixes
+
+* **deps:** move libcst to extras ([#585](https://github.com/googleapis/python-pubsub/issues/585)) ([0846762](https://github.com/googleapis/python-pubsub/commit/084676243ca4afd54cda601e589b80883f9703a3))
+* refactor client classes for safer type checking ([#552](https://github.com/googleapis/python-pubsub/issues/552)) ([7f705be](https://github.com/googleapis/python-pubsub/commit/7f705beb927383f14b9d56f0341ee0de101f7c05))
+* resolve DuplicateCredentialArgs error when using credentials_file ([8ca8cf2](https://github.com/googleapis/python-pubsub/commit/8ca8cf27333baf823a1dffd081e63079f1a12625))
+
+
+### Samples
+* samples: create subscription with filtering enabled [#580](https://github.com/googleapis/python-pubsub/pull/580)
+* samples: handle empty response in sync pull samples [#586](https://github.com/googleapis/python-pubsub/pull/586)
+* samples: sample for receiving messages with exactly-once delivery enabled [#588](https://github.com/googleapis/python-pubsub/pull/588)
+* samples: create subscription with exactly once delivery [#592](https://github.com/googleapis/python-pubsub/pull/592)
+(https://github.com/googleapis/python-pubsub/pull/588
+
+
+### Documentation
+
+* add autogenerated code snippets ([aa3754c](https://github.com/googleapis/python-pubsub/commit/aa3754cf432bd02be2734a23a32d5b36cd216aee))
+* Docs have inconsistent default values for max_latency and max_bytes ([#572](https://github.com/googleapis/python-pubsub/issues/572)) ([d136dfd](https://github.com/googleapis/python-pubsub/commit/d136dfdb69ebeebd1411a1415f863b94d07078f0))
+
 ## [2.9.0](https://www.github.com/googleapis/python-pubsub/compare/v2.8.0...v2.9.0) (2021-11-10)
 
 
diff --git a/setup.py b/setup.py
index 5423bbb0d..e1b259bd6 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@
 
 name = "google-cloud-pubsub"
 description = "Google Cloud Pub/Sub API client library"
-version = "2.9.0"
+version = "2.10.0"
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'