diff --git a/polynum/settings.py b/polynum/settings.py
index f403350..4680be0 100644
--- a/polynum/settings.py
+++ b/polynum/settings.py
@@ -99,6 +99,7 @@ TEMPLATE_LOADERS = (
 )
 
 MIDDLEWARE_CLASSES = (
+    'entrouvert.djommon.middleware.UserInTracebackMiddleware',
     'django.middleware.common.CommonMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',
     'django.middleware.csrf.CsrfViewMiddleware',
diff --git a/requirements b/requirements
index 20e5d02..9c7123f 100644
--- a/requirements
+++ b/requirements
@@ -11,3 +11,4 @@ django-debug-toolbar
 gunicorn<0.17
 django-model-utils < 1.2.0
 django-ajax-selects < 1.3.0
+http://repos.entrouvert.org/python-entrouvert.git/snapshot/python-entrouvert-master.zip