diff --git a/packages/google-cloud-monitoring/setup.py b/packages/google-cloud-monitoring/setup.py
index 1d7f93527645..74553bf9add3 100644
--- a/packages/google-cloud-monitoring/setup.py
+++ b/packages/google-cloud-monitoring/setup.py
@@ -57,7 +57,7 @@
 
 setup(
     name='google-cloud-monitoring',
-    version='0.28.0',
+    version='0.28.1.dev1',
     description='Python Client for Stackdriver Monitoring',
     long_description=README,
     namespace_packages=[