diff --git a/requirements.txt b/requirements.txt
index 3c21f4b..eeec894 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,6 +14,6 @@ opencv-contrib-python==3.2.0.7
 opencv-python==4.0.0.21
 python-engineio==3.9.0
 python-socketio==3.1.2
-PyYAML==5.1
+PyYAML==5.4
 six==1.12.0
 Werkzeug==0.16.0