diff --git a/src/setup.py b/src/setup.py
index 80c1414..e4f5873 100644
--- a/src/setup.py
+++ b/src/setup.py
@@ -127,6 +127,7 @@ def ReadConfig(section, value, default):
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
         'Development Status :: 3 - Alpha',
         'Intended Audience :: Developers',
     ])