diff --git a/setup.py b/setup.py
index 3dd945a..5037004 100644
--- a/setup.py
+++ b/setup.py
@@ -27,6 +27,7 @@ setup(name='cybertools',
             'zope.app.preview',
             'zope.app.renderer',
             'zope.app.session',
+            'zope.dublincore',
             'zope.sendmail',
       ],
       entry_points="""