diff --git a/setup.py b/setup.py
index c5c5741..500093a 100644
--- a/setup.py
+++ b/setup.py
@@ -65,6 +65,8 @@ setup(
         'Operating System :: MacOS',
         'Operating System :: Unix',
         'Programming Language :: Python',
+        'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 3',
         'Topic :: Software Development :: Libraries :: Python Modules',
         'Topic :: Internet',
         'Topic :: Scientific/Engineering',