diff --git a/docker-flask-mariadb-todo-list-from-scratch/docker/demo_webservice/requirements.txt b/docker-flask-mariadb-todo-list-from-scratch/docker/demo_webservice/requirements.txt
index 0f74cb3..98a65f6 100644
--- a/docker-flask-mariadb-todo-list-from-scratch/docker/demo_webservice/requirements.txt
+++ b/docker-flask-mariadb-todo-list-from-scratch/docker/demo_webservice/requirements.txt
@@ -1,7 +1,7 @@
 Click==7.0
 Flask==1.0.3
 itsdangerous==1.1.0
-Jinja2==2.10.1
+Jinja2==2.11.3
 MarkupSafe==1.1.1
 mysqlclient==1.4.2.post1
 six==1.12.0