--- a/cubicweb/__init__.py	Wed Jun 01 17:05:16 2016 +0200
+++ b/cubicweb/__init__.py	Thu Jun 16 17:09:11 2016 +0200
@@ -22,6 +22,7 @@
 
 import logging
 import os
+import pickle
 import sys
 import warnings
 import zlib