diff --git a/requirements.txt b/requirements.txt
index 2f8b025..7e9f399 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ Flask-WTF==0.13.1
 Flask-Mail
 html5lib==0.9999999
 itsdangerous==0.24
-Jinja2==2.8
+Jinja2==2.11.3
 Mako==1.0.4
 Markdown==2.6.7
 MarkupSafe==0.23