diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5d254c6c..a05fa190 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## [1.22.2](https://github.com/googleapis/proto-plus-python/compare/v1.22.1...v1.22.2) (2023-01-05)
+## [1.22.2rc1](https://github.com/googleapis/proto-plus-python/compare/v1.22.1...v1.22.2rc1) (2023-01-05)
 
 
 ### Bug Fixes
diff --git a/setup.py b/setup.py
index d29352a0..fe788457 100644
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,7 @@
 
 from setuptools import find_packages, setup
 
-version = "1.22.2"
+version = "1.22.2rc1"
 
 PACKAGE_ROOT = os.path.abspath(os.path.dirname(__file__))