--- a/setup.py	Tue Mar 17 17:12:48 2015 +0100
+++ b/setup.py	Tue Mar 17 17:13:25 2015 +0100
@@ -60,6 +60,7 @@
           'pyramid',
           'python-magic',
           'zope.component',
+          'zope.copy',
           'zope.interface',
       ],
       entry_points="""