diff --git a/src/python/interop/setup.py b/src/python/interop/setup.py
index 502fcbedd84293dd253832ce87534648395a08e1..75012b0d8f4cd35830cf49b50636fa763be27aa3 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>=0.4.0a4']
+_INSTALL_REQUIRES = ['oauth2client>=1.4.7', 'grpcio>=0.10.0a0']
 
 setuptools.setup(
     name='interop',
diff --git a/src/python/src/setup.py b/src/python/src/setup.py
index 5398b099360645659e13d6b3cb3bc0c9dbdfd1fa..b56b858b13074a3b969dfc79ab8a800540487ce4 100644
--- a/src/python/src/setup.py
+++ b/src/python/src/setup.py
@@ -86,7 +86,7 @@ _PACKAGE_DIRECTORIES = {
 
 setuptools.setup(
     name='grpcio',
-    version='0.9.0a1',
+    version='0.10.0a0',
     ext_modules=[_EXTENSION_MODULE],
     packages=list(_PACKAGES),
     package_dir=_PACKAGE_DIRECTORIES,