diff --git a/setup.cfg b/setup.cfg
index f33218629..b671d1953 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -16,8 +16,10 @@ classifier =
     Operating System :: POSIX :: Linux
     Programming Language :: Python
     Programming Language :: Python :: 2
-    Programming Language :: Python :: 2.7
     Programming Language :: Python :: 2.6
+    Programming Language :: Python :: 2.7
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.3
 
 [global]
 setup-hooks =