diff --git a/tests/test_source_maarch.py b/tests/test_source_maarch.py
index 8a2461b..85fc0ed 100644
--- a/tests/test_source_maarch.py
+++ b/tests/test_source_maarch.py
@@ -250,7 +250,7 @@ def test_feed(settings, app, maarch, wcs, user):
     user.set_password('test')
     user.save()
     # verify authentication error
-    response = app.post_json('/api/mail/response/', params={}, status=401)
+    response = app.post_json('/api/mail/response/', params={}, status=403)
     app.authorization = ('Basic', ('test', 'test'))
     # verify serializer error
     response = app.post_json('/api/mail/response/', params={}, status=400)
diff --git a/tox.ini b/tox.ini
index 15f99a1..2ffdf06 100644
--- a/tox.ini
+++ b/tox.ini
@@ -23,7 +23,7 @@ deps =
   python-dateutil
   pylint<1.8
   pylint-django<0.8.1
-  django-webtest<1.9.5
+  django-webtest>=1.9.6
   pyquery
   lxml
   git+https://git.entrouvert.org/debian/django-ckeditor.git