diff --git a/PythonWeb/requirements.txt b/PythonWeb/requirements.txt
index a3d65896..a7d0a2bb 100644
--- a/PythonWeb/requirements.txt
+++ b/PythonWeb/requirements.txt
@@ -55,7 +55,7 @@ pyrecommend==0.1.dev5
 PySocks==1.7.0
 python-dateutil==2.8.1
 pytz==2019.1
-PyYAML==5.1.2
+PyYAML==5.4
 requests==2.22.0
 requests-oauthlib==1.3.0
 six==1.13.0