diff --git a/setup.py b/setup.py
index f876273..c08eb73 100644
--- a/setup.py
+++ b/setup.py
@@ -30,6 +30,11 @@ setup(name='plone.app.discussion',
                        open("CHANGES.txt").read(),
       classifiers=[
         "Framework :: Plone",
+        "Framework :: Plone :: 3.3",
+        "Framework :: Plone :: 4.0",
+        "Framework :: Plone :: 4.1",
+        "Framework :: Plone :: 4.2",
+        "Framework :: Plone :: 4.3",
         "Programming Language :: Python",
         ],
       keywords='plone discussion',