diff --git a/requirements.txt b/requirements.txt
index e6267ac..e1982e2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ Flask-WTF==0.14.2
 gunicorn==19.9.0
 idna==2.8
 itsdangerous==1.1.0
-Jinja2==2.10
+Jinja2==2.11.3
 MarkupSafe==1.1.0
 requests==2.21.0
 urllib3==1.24.1