diff --git a/setup.cfg b/setup.cfg
index 6520daa7..626e0f89 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -13,6 +13,10 @@ classifier =
     Topic :: System :: Networking
     Natural Language :: English
     Programming Language :: Python
+    Programming Language :: Python :: 2.6
+    Programming Language :: Python :: 2.7
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.4
     Operating System :: Unix
 keywords =
     openflow