diff --git a/pandora/app/monkey_patch.py b/pandora/app/monkey_patch.py
new file mode 100644
index 00000000..44d08d73
--- /dev/null
+++ b/pandora/app/monkey_patch.py
@@ -0,0 +1,30 @@
+# -*- coding: utf-8 -*-
+# vi:si:et:sw=4:sts=4:ts=4
+from django.contrib.auth.models import User, Group
+from django.core.validators import MaxLengthValidator
+
+#load config from json
+import config
+config.init()
+
+NEW_LENGTH = {
+    'username': 255,
+    'email': 255,
+    'password': 255,
+}
+
+def monkey_patch_username():
+    for field in NEW_LENGTH:
+        f = User._meta.get_field(field)
+        f.max_length = NEW_LENGTH[field]
+        for v in f.validators:
+            if isinstance(v, MaxLengthValidator):
+                v.limit_value = NEW_LENGTH[field]
+
+    f = Group._meta.get_field('name')
+    f.max_length = 255
+    for v in f.validators:
+        if isinstance(v, MaxLengthValidator):
+            v.limit_value = 255
+
+monkey_patch_username()