diff --git a/setup.py b/setup.py
index a3e5d84..a68987d 100755
--- a/setup.py
+++ b/setup.py
@@ -56,6 +56,10 @@ setup(
         'Operating System :: GNU/Linux',
         'Intended Audience :: Developers',
         'Programming Language :: Python',
+        'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.4',
         'Topic :: System :: Peripherals',
         'Topic :: Software Development :: Libraries :: Python Modules',
     ],