diff --git a/gravity/gravity-backend/requirements.txt b/gravity/gravity-backend/requirements.txt
index b5bcb1c..eb59d2d 100644
--- a/gravity/gravity-backend/requirements.txt
+++ b/gravity/gravity-backend/requirements.txt
@@ -6,7 +6,7 @@ Flask-Cors==3.0.2
 Flask-RESTful==0.3.5
 gunicorn==19.7.1
 itsdangerous==0.24
-Jinja2==2.9.5
+Jinja2==2.11.3
 MarkupSafe==0.23
 packaging==16.8
 pyparsing==2.1.10