diff --git a/pip-requirements.txt b/pip-requirements.txt
index 9a166fe143c..e80d5aea445 100644
--- a/pip-requirements.txt
+++ b/pip-requirements.txt
@@ -29,3 +29,4 @@ Jinja2==2.6
 fanstatic==0.12
 requests==1.1.0
 WebTest==1.4.3
+dateutils==0.6.5