diff --git a/setup.py b/setup.py
index 2d80e6e..c182488 100755
--- a/setup.py
+++ b/setup.py
@@ -30,5 +30,6 @@ setup(
         'django_mailbox.management.commands',
         'django_mailbox.migrations',
         'django_mailbox.transports',
+        'django_mailbox.tests',
         ],
 )