diff --git a/setup.py b/setup.py
index c429d54..772161a 100755
--- a/setup.py
+++ b/setup.py
@@ -46,8 +46,6 @@ See http://propka.org/ for the PROPKA web server.
         'Operating System :: MacOS :: MacOS X',
         'Operating System :: Microsoft :: Windows',
         'Programming Language :: Python',
-        'Programming Language :: Python :: 3.6',
-        'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',