diff --git a/requirements.txt b/requirements.txt
index 0ccfb09..499c52a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ Flask-RESTful==0.3.9
 Jinja2==3.0.3 
 MarkupSafe==2.0.1 
 PyJWT==2.3.0 
-PyYAML==5.4.1
+PyYAML==6.0.1
 Werkzeug==2.0.3 
 adal==1.2.7 
 aniso8601==9.0.1