diff --git a/requirements.txt b/requirements.txt
index a356d50e3..3cc195981 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,6 +26,6 @@ notifications-python-client==4.4.0
 awscli>=1.11,<1.12
 awscli-cwlogs>=1.4,<1.5
 
-git+https://github.com/alphagov/notifications-utils.git@21.4.1#egg=notifications-utils==21.4.1
+git+https://github.com/alphagov/notifications-utils.git@21.5.0#egg=notifications-utils==21.5.0
 
 git+https://github.com/alphagov/boto.git@2.43.0-patch3#egg=boto==2.43.0-patch3