diff --git a/requirements.in b/requirements.in
index 44ee5c1d7..ad1b7ecd4 100644
--- a/requirements.in
+++ b/requirements.in
@@ -18,7 +18,7 @@ pyexcel-ods3==0.6.0
 pytz==2021.1
 gunicorn==20.1.0
 eventlet==0.30.2 # pyup: ignore
-notifications-python-client==6.2.1
+notifications-python-client==6.3.0
 Shapely==1.7.1
 rtreelib==0.2.0
 fido2==0.9.1
diff --git a/requirements.txt b/requirements.txt
index 399ce628c..ecad10970 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -118,7 +118,7 @@ markupsafe==2.0.1
     #   wtforms
 mistune==0.8.4
     # via notifications-utils
-notifications-python-client==6.2.1
+notifications-python-client==6.3.0
     # via -r requirements.in
 notifications-utils @ git+https://github.com/alphagov/notifications-utils.git@46.1.0
     # via -r requirements.in