diff --git a/python/setup.py b/python/setup.py
index 795f39714b..0fbcaeb4c0 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -284,6 +284,7 @@ def main():
       classifiers=[
           'Programming Language :: Python :: 3.7',
           'Programming Language :: Python :: 3.8',
+          'Programming Language :: Python :: 3.9',
           'Topic :: Software Development :: Libraries',
       ],
       license='Apache 2.0',