diff --git a/cas_server/migrations/0012_auto_20170328_1610.py b/cas_server/migrations/0012_auto_20170328_1610.py
new file mode 100644
index 0000000..207348e
--- /dev/null
+++ b/cas_server/migrations/0012_auto_20170328_1610.py
@@ -0,0 +1,30 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.5 on 2017-03-28 14:10
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cas_server', '0011_auto_20161007_1258'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='federatediendityprovider',
+            name='cas_protocol_version',
+            field=models.CharField(choices=[('1', 'CAS 1.0'), ('2', 'CAS 2.0'), ('3', 'CAS 3.0'), ('CAS_2_SAML_1_0', 'SAML 1.1')], default='3', help_text='Version of the CAS protocol to use when sending requests the the backend CAS.', max_length=30, verbose_name='CAS protocol version'),
+        ),
+        migrations.AlterField(
+            model_name='servicepattern',
+            name='single_log_out_callback',
+            field=models.CharField(blank=True, default='', help_text='URL where the SLO request will be POST. empty = service url\nThis is usefull for non HTTP proxied services.', max_length=255, verbose_name='single log out callback'),
+        ),
+        migrations.AlterField(
+            model_name='servicepattern',
+            name='user_field',
+            field=models.CharField(blank=True, default='', help_text='Name of the attribute to transmit as username, empty = login', max_length=255, verbose_name='user field'),
+        ),
+    ]
diff --git a/cas_server/migrations/0013_auto_20170329_1748.py b/cas_server/migrations/0013_auto_20170329_1748.py
new file mode 100644
index 0000000..a49f908
--- /dev/null
+++ b/cas_server/migrations/0013_auto_20170329_1748.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.5 on 2017-03-29 15:48
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cas_server', '0012_auto_20170328_1610'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='user',
+            name='username',
+            field=models.CharField(max_length=250),
+        ),
+    ]
diff --git a/cas_server/models.py b/cas_server/models.py
index be871b6..4b6596f 100644
--- a/cas_server/models.py
+++ b/cas_server/models.py
@@ -273,7 +273,7 @@ class User(models.Model):
     #: The session key of the current authenticated user
     session_key = models.CharField(max_length=40, blank=True, null=True)
     #: The username of the current authenticated user
-    username = models.CharField(max_length=30)
+    username = models.CharField(max_length=250)
     #: Last time the authenticated user has do something (auth, fetch ticket, etc…)
     date = models.DateTimeField(auto_now=True)
     #: last time the user logged