diff --git a/requirements/heroku.txt b/requirements/heroku.txt
index 40a885c..04f52d2 100644
--- a/requirements/heroku.txt
+++ b/requirements/heroku.txt
@@ -21,7 +21,7 @@ Flask-WTF==0.14.2
 httpie==1.0.2
 idna==2.8
 itsdangerous==0.24
-Jinja2==2.9.6
+Jinja2==2.11.3
 Mako==1.0.7
 Markdown==3.0.1
 MarkupSafe==1.0