diff --git a/setup.py b/setup.py
index 8554349..20d1c66 100644
--- a/setup.py
+++ b/setup.py
@@ -32,6 +32,7 @@ setup(name='plone.app.discussion',
       classifiers=[
           "Framework :: Plone",
           "Framework :: Plone :: 5.0",
+          "Framework :: Plone :: 5.1",
           "Programming Language :: Python",
           "Programming Language :: Python :: 2.7",
       ],