diff --git a/ClientServerTest/flaskapp/requirements.txt b/ClientServerTest/flaskapp/requirements.txt
index 3dcc092..30857b8 100644
--- a/ClientServerTest/flaskapp/requirements.txt
+++ b/ClientServerTest/flaskapp/requirements.txt
@@ -22,7 +22,7 @@ future==0.16.0
 idna==2.7
 isort==4.3.21
 itsdangerous==1.1.0
-Jinja2==2.10.3
+Jinja2==2.11.3
 jmespath==0.9.4
 joblib==0.14.1
 jsonschema==2.6.0