diff --git a/requirements.txt b/requirements.txt
index ff93059fc..ccaca0007 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,4 +28,4 @@ notifications-python-client>=3.1,<3.2
 awscli>=1.11,<1.12
 awscli-cwlogs>=1.4,<1.5
 
-git+https://github.com/alphagov/notifications-utils.git@17.3.0#egg=notifications-utils==17.3.0
+git+https://github.com/alphagov/notifications-utils.git@17.3.1#egg=notifications-utils==17.3.1