diff --git a/setup.cfg b/setup.cfg
index b1d176c1..f7daaf2f 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -16,6 +16,8 @@ classifier =
     Programming Language :: Python :: 2
     Programming Language :: Python :: 2.7
     Programming Language :: Python :: 2.6
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.3
 
 [files]
 packages =