diff --git a/src/python/interop/setup.py b/src/python/interop/setup.py
index 75012b0d8f4..502fcbedd84 100644
--- a/src/python/interop/setup.py
+++ b/src/python/interop/setup.py
@@ -45,7 +45,7 @@ _PACKAGE_DATA = {
         'credentials/server1.pem',]
 }
 
-_INSTALL_REQUIRES = ['oauth2client>=1.4.7', 'grpcio>=0.10.0a0']
+_INSTALL_REQUIRES = ['oauth2client>=1.4.7', 'grpcio>=0.4.0a4']
 
 setuptools.setup(
     name='interop',
diff --git a/src/python/src/setup.py b/src/python/src/setup.py
index 302443281ee..193285ac9bb 100644
--- a/src/python/src/setup.py
+++ b/src/python/src/setup.py
@@ -144,8 +144,8 @@ _PACKAGE_DIRECTORIES = {
 
 setuptools.setup(
     name='grpcio',
-    version='0.10.0a0',
-    ext_modules=[_EXTENSION_MODULE],
+    version='0.9.0a1',
+    ext_modules=_EXTENSION_MODULES,
     packages=list(_PACKAGES),
     package_dir=_PACKAGE_DIRECTORIES,
     install_requires=[