diff --git a/requirements.txt b/requirements.txt
index 7767cab..a985f52 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ Flask-Excel==0.0.7
 gunicorn==20.0.4
 itsdangerous==1.1.0
 jdcal==1.4.1
-Jinja2==2.10.3
+Jinja2==2.11.3
 lml==0.0.9
 MarkupSafe==1.1.1
 odfpy==1.4.0