--- a/setup.py	Mon May 28 14:05:40 2018 +0200
+++ b/setup.py	Tue May 29 09:47:42 2018 +0200
@@ -65,7 +65,7 @@
           'pyams_form >= 0.1.13',
           'pyams_pagelet',
           'pyams_skin',
-          'pyams_utils',
+          'pyams_utils >= 0.1.15',
           'pyams_viewlet',
           'pyramid >= 1.9',
           'z3c.form',