diff --git a/tests/test_settings.py b/tests/test_settings.py
index <HASH>..<HASH> 100644
--- a/tests/test_settings.py
+++ b/tests/test_settings.py
@@ -9,3 +9,7 @@ DATABASES = {
         'ENGINE': 'django.db.backends.sqlite3',
     }
 }
+
+PASSWORD_HASHERS = (
+    'django.contrib.auth.hashers.MD5PasswordHasher',
+)
use md5 password hasher to speed up the tests