diff --git a/requirements/base.txt b/requirements/base.txt
index 3720e34..edb5239 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -3,4 +3,5 @@ pytz==2015.7
 django-widget-tweaks==1.4.1
 psycopg2==2.6.1
 django-libsass==0.6
-django_compressor==2.0
\ No newline at end of file
+django_compressor==2.0
+python-dateutil==2.5.3
\ No newline at end of file