diff --git a/requirements.txt b/requirements.txt
index 2cd9254..498bb7e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ djangorestframework==3.8.2
 freezegun==0.3.10
 funcy==1.10.1
 psycopg2-binary==2.7.4
-python-dateutil==2.7.2
+python-dateutil==2.7.3
 pytz==2018.4
 raven==6.6.0
 rcssmin==1.0.6