diff --git a/machines/web02/cas-eleves/packages/django-cas-server/01-pytest.patch b/machines/web02/cas-eleves/packages/django-cas-server/01-pytest.patch
index 7a31d2b..49b85e4 100644
--- a/machines/web02/cas-eleves/packages/django-cas-server/01-pytest.patch
+++ b/machines/web02/cas-eleves/packages/django-cas-server/01-pytest.patch
@@ -18,3 +18,63 @@ index d690724..73ee761 100644
      def test_crypt(self):
          """test the crypt auth method"""
          salts = ["$6$UVVAQvrMyXMF3FF3", "aa"]
+diff --git a/cas_server/tests/test_federate.py b/cas_server/tests/test_federate.py
+index 2b389d3..e82e182 100644
+--- a/cas_server/tests/test_federate.py
++++ b/cas_server/tests/test_federate.py
+@@ -16,6 +16,7 @@ from cas_server.default_settings import settings
+ import django
+ from django.test import TestCase, Client
+ from django.test.utils import override_settings
++import pytest
+ 
+ from six.moves import reload_module
+ 
+@@ -64,6 +65,7 @@ class FederateAuthLoginLogoutTestCase(
+             ) in response.content.decode("utf-8"))
+         self.assertEqual(response.context['post_url'], '/federate')
+ 
++    @pytest.mark.skip(reason="Address already in use")
+     def test_login_post_provider(self, remember=False):
+         """test a successful login wrokflow"""
+         tickets = []
+@@ -253,6 +255,7 @@ class FederateAuthLoginLogoutTestCase(
+         self.assertEqual(response.status_code, 200)
+         self.assertIn(b"Invalid response from your identity provider CAS", response.content)
+ 
++    @pytest.mark.skip(reason="Address already in use")
+     def test_auth_federate_slo(self):
+         """test that SLO receive from backend CAS log out the users"""
+         # get tickets and connected clients
+@@ -301,6 +304,7 @@ class FederateAuthLoginLogoutTestCase(
+                     client, response, username=provider.build_username(settings.CAS_TEST_USER)
+                 )
+ 
++    @pytest.mark.skip(reason="Address already in use")
+     def test_federate_logout(self):
+         """
+             test the logout function: the user should be log out
+@@ -340,6 +344,7 @@ class FederateAuthLoginLogoutTestCase(
+                 response = client.get("/login")
+                 self.assert_login_failed(client, response)
+ 
++    @pytest.mark.skip(reason="Address already in use")
+     def test_remember_provider(self):
+         """
+             If the user check remember, next login should not offer the chose of the backend CAS
+@@ -355,6 +360,7 @@ class FederateAuthLoginLogoutTestCase(
+                 provider.suffix
+             ))
+ 
++    @pytest.mark.skip(reason="Address already in use")
+     def test_forget_provider(self):
+         """Test the logout option to forget remembered provider"""
+         tickets = self.test_login_post_provider(remember=True)
+@@ -365,6 +371,7 @@ class FederateAuthLoginLogoutTestCase(
+             client.get("/logout?forget_provider=1")
+             self.assertEqual(client.cookies["remember_provider"]["max-age"], 0)
+ 
++    @pytest.mark.skip(reason="Address already in use")
+     def test_renew(self):
+         """
+             Test authentication renewal with federation mode