diff --git a/requirements.txt b/requirements.txt
index 703cda8..a9e083a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ pyparsing==3.0.7
 python-engineio==3.9.3
 python-socketio==4.3.1
 pytz==2019.3
-PyYAML==5.1.2
+PyYAML==5.4
 redis==4.1.2
 requests==2.22.0
 six==1.12.0