diff --git a/cas_server/management/commands/cas_clean_federate.py b/cas_server/management/commands/cas_clean_federate.py
new file mode 100644
index 0000000..4c60ed5
--- /dev/null
+++ b/cas_server/management/commands/cas_clean_federate.py
@@ -0,0 +1,19 @@
+from django.core.management.base import BaseCommand
+from django.utils.translation import ugettext_lazy as _
+from django.utils import timezone
+
+from datetime import timedelta
+
+from ... import models
+from ...default_settings import settings
+
+
+class Command(BaseCommand):
+    args = ''
+    help = _(u"Clean old federated users")
+
+    def handle(self, *args, **options):
+        federated_users = models.FederatedUser.objects.filter(last_update__lt=(timezone.now() - timedelta(seconds=settings.CAS_TICKET_TIMEOUT)))
+        for user in federated_users:
+            if not models.User.objects.filter(username='%s@%s' % (user.username, user.provider)):
+                user.delete()