diff --git a/requirements-app.txt b/requirements-app.txt
index f3a59c738..9f80bb070 100644
--- a/requirements-app.txt
+++ b/requirements-app.txt
@@ -16,7 +16,7 @@ pytz==2018.5
 gunicorn==19.7.1  # >19.8 stops eventlet workers after a timeout
 whitenoise==4.1  #manages static assets
 eventlet==0.24.1
-notifications-python-client==5.1.0
+notifications-python-client==5.2.0
 
 # PaaS
 awscli-cwlogs>=1.4,<1.5