diff --git a/setup.py b/setup.py
index 80828a3b4a9aa3d9cc9ec033648bee0f9e676fb4..3e8a7abe340c469f9970871acf27125c67ae641f 100644
--- a/setup.py
+++ b/setup.py
@@ -218,7 +218,7 @@ else:
 
 setuptools.setup(
     name='grpcio',
-    version='0.12.0b8',
+    version='0.12.0b9',
     license=LICENSE,
     ext_modules=CYTHON_EXTENSION_MODULES,
     packages=list(PACKAGES),