diff --git a/setup.py b/setup.py
index efe7b75..3510848 100755
--- a/setup.py
+++ b/setup.py
@@ -73,4 +73,5 @@ setup(
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.1",
         "Programming Language :: Python :: 3.2",
+        "Programming Language :: Python :: 3.3",
         "Topic :: Office/Business :: Groupware"])