diff --git a/requirements-app.txt b/requirements-app.txt
index e70659ff1..a68232ae0 100644
--- a/requirements-app.txt
+++ b/requirements-app.txt
@@ -17,7 +17,7 @@ pyexcel-ods3==0.5.3
 pytz==2020.1
 gunicorn==20.0.4
 eventlet==0.25.2
-notifications-python-client==5.5.1
+notifications-python-client==5.6.0
 
 # PaaS
 awscli-cwlogs>=1.4,<1.5