diff --git a/flaskapp/requirements.txt b/flaskapp/requirements.txt
index 75b05f2..6397cc0 100644
--- a/flaskapp/requirements.txt
+++ b/flaskapp/requirements.txt
@@ -7,7 +7,7 @@ greenlet==0.4.15
 gunicorn==19.9.0
 idna==2.7
 itsdangerous==0.24
-Jinja2==2.10
+Jinja2==2.11.3
 MarkupSafe==1.0
 numpy==1.15.2
 pandas==0.23.4