diff --git a/note_kfet/settings/__init__.py b/note_kfet/settings/__init__.py
index 6d871599..c1df7477 100644
--- a/note_kfet/settings/__init__.py
+++ b/note_kfet/settings/__init__.py
@@ -1,4 +1,9 @@
+# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from django.utils.translation import gettext_lazy as _
 import re
+
 from .base import *
 
 
diff --git a/note_kfet/settings/base.py b/note_kfet/settings/base.py
index 4fe12fbf..3a5c3200 100644
--- a/note_kfet/settings/base.py
+++ b/note_kfet/settings/base.py
@@ -39,6 +39,8 @@ INSTALLED_APPS = [
     'polymorphic',
     'crispy_forms',
     'django_tables2',
+    'cas_server',
+    'cas',
     # Django contrib
     'django.contrib.admin',
     'django.contrib.admindocs',