diff --git a/web_application/heroku_deployment/requirements.txt b/web_application/heroku_deployment/requirements.txt
index 100463a..fb77b9f 100644
--- a/web_application/heroku_deployment/requirements.txt
+++ b/web_application/heroku_deployment/requirements.txt
@@ -7,7 +7,7 @@ ipython==6.2.1
 ipython-genutils==0.2.0
 itsdangerous==0.24
 jedi==0.11.0
-Jinja2==2.10
+Jinja2==2.11.3
 MarkupSafe==1.0
 parso==0.1.0
 passlib==1.7.1