diff --git a/demo-app/requirements.txt b/demo-app/requirements.txt
index 25cd3a4..d2851ff 100644
--- a/demo-app/requirements.txt
+++ b/demo-app/requirements.txt
@@ -1,5 +1,5 @@
 google-cloud-monitoring==0.31.1
-google-cloud-pubsub==0.42.1
+google-cloud-pubsub==2.22.0
 google-cloud-trace==0.21.0
 gunicorn==19.9.0
 opencensus==0.6.0