diff --git a/requirements.txt b/requirements.txt
index 3a21984..9a53998 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ html5lib==0.9999999
 idna==2.5
 isodate==0.5.4
 itsdangerous==0.24
-Jinja2==2.9.6
+Jinja2==2.11.3
 keepalive==0.5
 MarkupSafe==1.0
 music21==4.1.0