diff --git a/Chapter04/Lie_to_me/requirements.txt b/Chapter04/Lie_to_me/requirements.txt
index a6ed908..c352adb 100644
--- a/Chapter04/Lie_to_me/requirements.txt
+++ b/Chapter04/Lie_to_me/requirements.txt
@@ -43,5 +43,5 @@ sklearn
 traitlets==4.3.2
 wcwidth==0.1.7
 websockets==4.0.1
-Werkzeug==0.14.1
+Werkzeug==2.2.3
 wrapt==1.10.11