diff --git a/setup.cfg b/setup.cfg
index 3513c3bf5..66349f7a8 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -16,6 +16,9 @@ classifier =
     License :: OSI Approved :: Apache Software License
     Operating System :: OS Independent
     Programming Language :: Python
+    Programming Language :: Python :: 2.6
+    Programming Language :: Python :: 2.7
+    Programming Language :: Python :: 3.3
 
 [files]
 packages =