diff --git a/setup.py b/setup.py
index 3a3388ad..29214a8c 100755
--- a/setup.py
+++ b/setup.py
@@ -143,6 +143,9 @@ setup(
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
         'Topic :: Internet :: Proxy Servers',
         'Topic :: Internet :: WWW/HTTP',
         'Topic :: Internet :: WWW/HTTP :: WSGI',