diff --git a/setup.py b/setup.py
index 253618a0..d3a66ae5 100644
--- a/setup.py
+++ b/setup.py
@@ -82,7 +82,7 @@ def finalize_options(self):
           'Programming Language :: Python :: 3.6',
           'Programming Language :: Python :: 3.7',
           'Programming Language :: Python :: 3.8',
-          'Programming Language :: Python :: 3.9'
+          'Programming Language :: Python :: 3.9',
           'Development Status :: 4 - Beta',
           'Intended Audience :: Developers',
           'License :: OSI Approved :: Apache Software License',