diff --git a/courseware/capa_module.py b/courseware/capa_module.py
index 85ec7f0060..f565b0a6eb 100644
--- a/courseware/capa_module.py
+++ b/courseware/capa_module.py
@@ -6,6 +6,7 @@ from capa.capa_problem import LoncapaProblem
 from django.http import Http404
 
 import dateutil
+import dateutil.parser
 import datetime
 
 import content_parser