diff --git a/app/utils/requirements.txt b/app/utils/requirements.txt
index 2a361439ba..00dd5ddb4f 100644
--- a/app/utils/requirements.txt
+++ b/app/utils/requirements.txt
@@ -49,7 +49,7 @@ python-editor==1.0
 python-engineio==0.9.1
 python-socketio==1.3
 pytz==2016.4
-PyYAML==3.12
+PyYAML==5.4
 redis==2.10.5
 requests==2.13.0
 scikit-learn==0.18.1