diff --git a/setup.py b/setup.py
index 48add53..27bd6d8 100644
--- a/setup.py
+++ b/setup.py
@@ -26,6 +26,7 @@ setup(name='plone.app.discussion',
       install_requires=[
           'setuptools',
           'collective.autopermission',
+          'collective.monkeypatcher',
           'plone.app.registry',
           'plone.indexer',
           'plone.registry',