diff --git a/requirements.txt b/requirements.txt
index c4c53b5d1..f79de9275 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,6 +22,6 @@ Flask-Redis==0.1.0
 
 git+https://github.com/alphagov/notifications-python-client.git@3.0.0#egg=notifications-python-client==3.0.0
 
-git+https://github.com/alphagov/notifications-utils.git@9.2.1#egg=notifications-utils==9.2.1
+git+https://github.com/alphagov/notifications-utils.git@10.3.0#egg=notifications-utils==10.3.0
 
 git+https://github.com/alphagov/boto.git@2.43.0-patch3#egg=boto==2.43.0-patch3