diff --git a/DeployFlaskHeroku/requirements.txt b/DeployFlaskHeroku/requirements.txt
index fe472a6..7dc1c80 100644
--- a/DeployFlaskHeroku/requirements.txt
+++ b/DeployFlaskHeroku/requirements.txt
@@ -1,7 +1,7 @@
 Flask==2.3.2
 gunicorn==19.9.0
 itsdangerous==1.1.0
-Jinja2==2.11.3
+Jinja2==3.1.3
 MarkupSafe==1.1.1
 Werkzeug==2.2.3
 numpy>=1.9.2