diff --git a/requirements-app.txt b/requirements-app.txt
index 52c436eaf..2cde020ae 100644
--- a/requirements-app.txt
+++ b/requirements-app.txt
@@ -37,5 +37,5 @@ awscli-cwlogs==1.4.6
 git+https://github.com/alphagov/notifications-utils.git@44.1.0#egg=notifications-utils==44.1.0
 
 # gds-metrics requires prometheseus 0.2.0, override that requirement as 0.7.1 brings significant performance gains
-prometheus-client==0.9.0
+prometheus-client==0.10.1
 gds-metrics==0.2.4