diff --git a/CZ3006/Lab 4/requirements.txt b/CZ3006/Lab 4/requirements.txt
index 5fe45a38..f974a15b 100644
--- a/CZ3006/Lab 4/requirements.txt	
+++ b/CZ3006/Lab 4/requirements.txt	
@@ -10,7 +10,7 @@ ipython==7.13.0
 ipython-genutils==0.2.0
 ipywidgets==7.5.1
 jedi==0.16.0
-Jinja2==2.11.1
+Jinja2==3.1.5
 json5==0.9.4
 jsonschema==3.2.0
 jupyter-client==6.1.2