diff --git a/oidc_provider/migrations/0005_token_refresh_token.py b/oidc_provider/migrations/0005_token_refresh_token.py
new file mode 100644
index 0000000..e571318
--- /dev/null
+++ b/oidc_provider/migrations/0005_token_refresh_token.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('oidc_provider', '0004_remove_userinfo'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='token',
+            name='refresh_token',
+            field=models.CharField(max_length=255, unique=True, null=True),
+            preserve_default=True,
+        ),
+    ]
diff --git a/oidc_provider/models.py b/oidc_provider/models.py
index 46957e4..1471abd 100644
--- a/oidc_provider/models.py
+++ b/oidc_provider/models.py
@@ -77,6 +77,7 @@ class Code(BaseCodeTokenModel):
 class Token(BaseCodeTokenModel):
 
     access_token = models.CharField(max_length=255, unique=True)
+    refresh_token = models.CharField(max_length=255, unique=True, null=True)
     _id_token = models.TextField()
     def id_token():
         def fget(self):