diff --git a/ClassExamples/ON47/StudentPassFail_Flask/test/requirements.txt b/ClassExamples/ON47/StudentPassFail_Flask/test/requirements.txt
index eb6294a..f2ac674 100644
--- a/ClassExamples/ON47/StudentPassFail_Flask/test/requirements.txt
+++ b/ClassExamples/ON47/StudentPassFail_Flask/test/requirements.txt
@@ -10,5 +10,5 @@ numpy==1.16.6
 PyYAML==5.3.1
 scipy==1.2.3
 six==1.15.0
-Werkzeug==1.0.1
+Werkzeug==2.2.3
 xgboost==0.82
\ No newline at end of file