diff --git a/setup.py b/setup.py
index 829a1ef..15f3536 100755
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@ required = [
     'pytz',
     'dateparser',
     'iso8601',
-    'python-dateutil'
+    'python-dateutil',
     'ruamel.yaml'
 ]