diff --git a/requirements.txt b/requirements.txt
index 14d9060..0657d80 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,7 +50,7 @@ pyparsing==2.4.7
 python-dateutil==2.8.1
 python-engineio==3.12.1
 python-socketio==4.5.1
-PyYAML==5.3.1
+PyYAML==5.4
 pyzmq==19.0.0
 scikit-learn==0.22.2.post1
 scipy==1.4.1