Update trove classifiers
diff --git a/setup_oauth2client.py b/setup_oauth2client.py
index 19f14b5..0c08382 100644
--- a/setup_oauth2client.py
+++ b/setup_oauth2client.py
@@ -58,7 +58,7 @@
       packages=packages,
       license="Apache 2.0",
       keywords="google oauth 2.0 http client",
-      classifiers=['Development Status :: 4 - Beta',
+      classifiers=['Development Status :: 5 - Production/Stable',
                    'Intended Audience :: Developers',
                    'License :: OSI Approved :: Apache Software License',
                    'Operating System :: POSIX',