diff --git a/setup.py b/setup.py
index 5f3ebf95..853a5a3b 100644
--- a/setup.py
+++ b/setup.py
@@ -39,6 +39,7 @@ setup(
         'celery',
         'jinja2',
         'sphinx',
+        'PIL',
         ],
     test_suite='nose.collector',