diff --git a/demo-app/requirements.txt b/demo-app/requirements.txt
index 9c119ac..5a99e68 100644
--- a/demo-app/requirements.txt
+++ b/demo-app/requirements.txt
@@ -1,4 +1,4 @@
-google-cloud-monitoring==0.29.0
+google-cloud-monitoring==0.31.1
 google-cloud-pubsub==0.35.4
 google-cloud-trace==0.19.0
 gunicorn==19.8.1