diff --git a/setup.py b/setup.py
index 530515e..d380494 100644
--- a/setup.py
+++ b/setup.py
@@ -28,10 +28,10 @@ setup(name='plone.app.discussion',
           'collective.autopermission',
           'collective.monkeypatcher',
           'plone.app.registry',
-          'plone.app.z3cform==0.4.6',
+          'plone.app.z3cform',
           'plone.indexer',
           'plone.registry',
-          'plone.z3cform==0.5.5',
+          'plone.z3cform<=0.5.7',
           'ZODB3',
           'zope.interface',
           'zope.component',