diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index cada9068..61d5988c 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -16,7 +16,7 @@ py37-django22:
         apt-get install --no-install-recommends -t buster-backports -y
         python3-django python3-django-crispy-forms
         python3-django-extensions python3-django-filters python3-django-polymorphic
-        python3-djangorestframework python3-django-cas-server python3-psycopg2 python3-pil
+        python3-djangorestframework python3-django-oauth-toolkit python3-psycopg2 python3-pil
         python3-babel python3-lockfile python3-pip python3-phonenumbers
         python3-bs4 python3-setuptools tox texlive-xetex
   script: tox -e py37-django22
@@ -33,7 +33,7 @@ py38-django22:
         apt-get install --no-install-recommends -y
         python3-django python3-django-crispy-forms
         python3-django-extensions python3-django-filters python3-django-polymorphic
-        python3-djangorestframework python3-django-cas-server python3-psycopg2 python3-pil
+        python3-djangorestframework python3-django-oauth-toolkit python3-psycopg2 python3-pil
         python3-babel python3-lockfile python3-pip python3-phonenumbers
         python3-bs4 python3-setuptools tox texlive-xetex
   script: tox -e py38-django22
diff --git a/Dockerfile b/Dockerfile
index 0dd1ce8b..9696de7c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,7 @@ RUN apt-get update && \
     apt-get install --no-install-recommends -t buster-backports -y \
     python3-django python3-django-crispy-forms \
     python3-django-extensions python3-django-filters python3-django-polymorphic \
-    python3-djangorestframework python3-django-cas-server python3-psycopg2 python3-pil \
+    python3-djangorestframework python3-django-oauth-toolkit python3-psycopg2 python3-pil \
     python3-babel python3-lockfile python3-pip python3-phonenumbers ipython3 \
     python3-bs4 python3-setuptools \
     uwsgi uwsgi-plugin-python3 \
diff --git a/README.md b/README.md
index f2ada2a8..910fd19a 100644
--- a/README.md
+++ b/README.md
@@ -93,7 +93,7 @@ Sinon vous pouvez suivre les étapes décrites ci-dessous.
     $ sudo apt install --no-install-recommends -t buster-backports -y \
         python3-django python3-django-crispy-forms \
         python3-django-extensions python3-django-filters python3-django-polymorphic \
-        python3-djangorestframework python3-django-cas-server python3-psycopg2 python3-pil \
+        python3-djangorestframework python3-django-oauth-toolkit python3-psycopg2 python3-pil \
         python3-babel python3-lockfile python3-pip python3-phonenumbers ipython3 \
         python3-bs4 python3-setuptools \
         uwsgi uwsgi-plugin-python3 \
diff --git a/ansible/roles/1-apt-basic/tasks/main.yml b/ansible/roles/1-apt-basic/tasks/main.yml
index 1ca1b3d6..95f6d40a 100644
--- a/ansible/roles/1-apt-basic/tasks/main.yml
+++ b/ansible/roles/1-apt-basic/tasks/main.yml
@@ -23,10 +23,10 @@
       - python3-babel
       - python3-bs4
       - python3-django
-      - python3-django-cas-server
       - python3-django-crispy-forms
       - python3-django-extensions
       - python3-django-filters
+      - python3-django-oauth-toolkit
       - python3-django-polymorphic
       - python3-djangorestframework
       - python3-lockfile
diff --git a/note_kfet/admin.py b/note_kfet/admin.py
index f128b237..1fa228fe 100644
--- a/note_kfet/admin.py
+++ b/note_kfet/admin.py
@@ -44,9 +44,3 @@ if "rest_framework" in settings.INSTALLED_APPS:
     from rest_framework.authtoken.admin import *
     from rest_framework.authtoken.models import *
     admin_site.register(Token, TokenAdmin)
-
-if "cas_server" in settings.INSTALLED_APPS:
-    from cas_server.admin import *
-    from cas_server.models import *
-    admin_site.register(ServicePattern, ServicePatternAdmin)
-    admin_site.register(FederatedIendityProvider, FederatedIendityProviderAdmin)
diff --git a/note_kfet/fixtures/cas.json b/note_kfet/fixtures/cas.json
deleted file mode 100644
index c3109d19..00000000
--- a/note_kfet/fixtures/cas.json
+++ /dev/null
@@ -1,11 +0,0 @@
-[
-    {
-        "model": "cas_server.servicepattern",
-        "pk": 1,
-        "fields": {
-            "pos": 1,
-            "pattern": ".*",
-            "name": "REPLACEME"
-        }
-    }
-]
diff --git a/note_kfet/settings/__init__.py b/note_kfet/settings/__init__.py
index dcfa88a8..0c76b6f4 100644
--- a/note_kfet/settings/__init__.py
+++ b/note_kfet/settings/__init__.py
@@ -49,13 +49,6 @@ try:
 except ImportError:
     pass
 
-if "cas_server" in INSTALLED_APPS:
-    # CAS Settings
-    CAS_AUTO_CREATE_USER = False
-    CAS_LOGO_URL = "/static/img/Saperlistpopette.png"
-    CAS_FAVICON_URL = "/static/favicon/favicon-32x32.png"
-    CAS_SHOW_POWERED = False
-
 if "logs" in INSTALLED_APPS:
     MIDDLEWARE += ('note_kfet.middlewares.SessionMiddleware',)
 
diff --git a/note_kfet/settings/secrets_example.py b/note_kfet/settings/secrets_example.py
index b1f9e399..656e558b 100644
--- a/note_kfet/settings/secrets_example.py
+++ b/note_kfet/settings/secrets_example.py
@@ -3,7 +3,6 @@
 
 # CAS
 OPTIONAL_APPS = [
-#    'cas_server',
 #    'debug_toolbar'
 ]
 
diff --git a/note_kfet/templates/cas_server/base.html b/note_kfet/templates/cas_server/base.html
deleted file mode 100644
index 4e93cee0..00000000
--- a/note_kfet/templates/cas_server/base.html
+++ /dev/null
@@ -1,99 +0,0 @@
-{% load i18n %}{% load static %}{% get_current_language as LANGUAGE_CODE %}<!DOCTYPE html>
-<html{% if LANGUAGE_CODE %} lang="{{LANGUAGE_CODE}}"{% endif %}>
-    <head>
-        <meta charset="utf-8">
-        <!--[if IE]><meta http-equiv="X-UA-Compatible" content="IE=edge" /><![endif]-->
-        <meta name="viewport" content="width=device-width, initial-scale=1">
-        <title>{% block title %}{% trans "Central Authentication Service"  %}{% endblock %}</title>
-        <link href="{{settings.CAS_COMPONENT_URLS.bootstrap3_css}}" rel="stylesheet">
-        <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
-        <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
-        <!--[if lt IE 9]>
-        <script src="{{settings.CAS_COMPONENT_URLS.html5shiv}}"></script>
-        <script src="{{settings.CAS_COMPONENT_URLS.respond}}"></script>
-        <![endif]-->
-        {% if settings.CAS_FAVICON_URL %}<link rel="shortcut icon" href="{{settings.CAS_FAVICON_URL}}" />{% endif %}
-        <link href="{% static "cas_server/styles.css" %}" rel="stylesheet">
-    </head>
-    <body>
-      <div id="wrap">
-        <div class="container">
-            {% if auto_submit %}<noscript>{% endif %}
-            <div class="row">
-              <div class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
-                <h1 id="app-name">
-                    {% if settings.CAS_LOGO_URL %}<img src="{{settings.CAS_LOGO_URL}}" alt="cas-logo" />{% endif %}
-                    Authentification Note Kfet 2020</h1>
-              </div>
-            </div>
-            {% if auto_submit %}</noscript>{% endif %}
-            <div class="row">
-            <div class="col-lg-3 col-md-3 col-sm-2 col-xs-12"></div>
-            <div class="col-lg-6 col-md-6 col-sm-8 col-xs-12">
-            {% if auto_submit %}<noscript>{% endif %}
-            {% for msg in CAS_INFO_RENDER %}
-              <div class="alert alert-{{msg.type}}{% if msg.discardable %} alert-dismissable{% endif %}">
-                {% if msg.discardable %}<button type="button" class="close" data-dismiss="alert" aria-hidden="true" id="info-{{msg.name}}">&#215;</button>{% endif %}
-                <p>{{msg.message}}</p>
-              </div>
-            {% endfor %}
-            {% if settings.CAS_NEW_VERSION_HTML_WARNING and upgrade_available %}
-              <div class="alert alert-info alert-dismissable">
-                <button type="button" class="close" data-dismiss="alert" aria-hidden="true" id="alert-version">&#215;</button>
-                <p>{% blocktrans %}A new version of the application is available. This instance runs {{VERSION}} and the last version is {{LAST_VERSION}}. Please consider upgrading.{% endblocktrans %}</p>
-              </div>
-            {% endif %}
-            {% block ante_messages %}{% endblock %}
-            {% for message in messages %}
-                <div {% spaceless %}
-                    {% if message.level == message_levels.DEBUG %}
-                        class="alert alert-warning"
-                    {% elif message.level == message_levels.INFO %}
-                        class="alert alert-info"
-                    {% elif message.level == message_levels.SUCCESS %}
-                        class="alert alert-success"
-                    {% elif message.level == message_levels.WARNING %}
-                        class="alert alert-warning"
-                    {% else %}
-                        class="alert alert-danger"
-                    {% endif %}
-                {% endspaceless %}>
-                    <p>{{message}}</p>
-                </div>
-            {% endfor %}
-            {% if auto_submit %}</noscript>{% endif %}
-            {% block content %}{% endblock %}
-            </div>
-            <div class="col-lg-3 col-md-3 col-sm-2 col-xs-0"></div>
-            </div>
-        </div> <!-- /container -->
-      </div>
-      <div style="clear: both;"></div>
-      {% if settings.CAS_SHOW_POWERED %}
-      <div id="footer">
-          <p><a class="text-muted" href="https://pypi.org/project/django-cas-server/">django-cas-server powered</a></p>
-      </div>
-      {% endif %}
-      <script src="{{settings.CAS_COMPONENT_URLS.jquery}}"></script>
-      <script src="{{settings.CAS_COMPONENT_URLS.bootstrap3_js}}"></script>
-      <script src="{% static "cas_server/functions.js" %}"></script>
-      <script type="text/javascript">
-{% if settings.CAS_NEW_VERSION_HTML_WARNING and upgrade_available %}
-discard_and_remember("#alert-version", "cas-alert-version", "{{LAST_VERSION}}");
-{% endif %}
-{% for msg in CAS_INFO_RENDER %}
-{% if msg.discardable %}
-discard_and_remember("#info-{{msg.name}}", "cas-info-{{msg.name}}", "{{msg.hash}}");
-{% endif %}
-{% endfor %}
-{% block javascript_inline %}{% endblock %}
-</script>
-      {% block javascript %}{% endblock %}
-    </body>
-</html>
-<!--
-Powered by django-cas-server version {{VERSION}}
-
-Pypi: https://pypi.org/project/django-cas-server/
-github: https://github.com/nitmir/django-cas-server
--->
diff --git a/note_kfet/urls.py b/note_kfet/urls.py
index ae6bf3db..74731a62 100644
--- a/note_kfet/urls.py
+++ b/note_kfet/urls.py
@@ -41,12 +41,6 @@ if settings.DEBUG:
     urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
 
 
-if "cas_server" in settings.INSTALLED_APPS:
-    urlpatterns += [
-        # Include CAS Server routers
-        path('cas/', include('cas_server.urls', namespace="cas_server")),
-    ]
-
 if "debug_toolbar" in settings.INSTALLED_APPS:
     import debug_toolbar
     urlpatterns = [
diff --git a/requirements.txt b/requirements.txt
index dccb8988..f7aa0d8a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,13 +1,13 @@
 beautifulsoup4~=4.7.1
 Django~=2.2.15
 django-bootstrap-datepicker-plus~=3.0.5
-django-cas-server>=1.2.0
 django-colorfield~=0.3.2
 django-crispy-forms~=1.7.2
 django-extensions~=2.1.4
 django-filter~=2.1.0
 django-htcpcp-tea~=0.3.1
 django-mailer~=2.0.1
+django-oauth-toolkit~=0.11.0
 django-phonenumber-field~=5.0.0
 django-polymorphic~=2.0.3
 djangorestframework~=3.9.0