diff -r 616e402eb49f -r 51728590c054 setup.py
--- a/setup.py	Sun Mar 11 10:46:58 2018 +0100
+++ b/setup.py	Sun Mar 11 11:20:23 2018 +0100
@@ -65,7 +65,7 @@
           'zope.interface',
           'zope.lifecycleevent',
           'zope.schema',
-          'zope.sqlalchemy',
+          'zope.sqlalchemy >= 1.0.0',
       ],
       entry_points="""
       # -*- Entry points: -*-