diff --git a/requirements/edx/base.txt b/requirements/edx/base.txt
index 28525fe740..f53d5c4347 100644
--- a/requirements/edx/base.txt
+++ b/requirements/edx/base.txt
@@ -14,7 +14,8 @@ cryptography==1.3.1
 cssselect==0.9.1
 dealer==2.0.4
 defusedxml==0.4.1
-django-babel-underscore==0.4.2
+django-babel-underscore==0.5.1
+markey==0.8  # From django-babel-underscore
 django-celery==3.1.16
 django-config-models==0.1.3
 django-countries==4.0