diff --git a/requirements.txt b/requirements.txt
index 9093e56d3..dd5d88e03 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,4 +29,4 @@ whitenoise==1.0.6  #manages static assets
 # pin to minor version 3.1.x
 notifications-python-client>=3.1,<3.2
 
-git+https://github.com/alphagov/notifications-utils.git@13.1.0#egg=notifications-utils==13.1.0
+git+https://github.com/alphagov/notifications-utils.git@13.1.1#egg=notifications-utils==13.1.1