diff --git a/requirements.txt b/requirements.txt
index 007c916..d5b4150 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ Flask-RESTful==0.3.7
 Flask-SQLAlchemy==2.4.1
 Flask-WTF==0.14.3
 gunicorn==20.0.4
-Jinja2==2.10.3
+Jinja2==2.11.3
 pdfkit==0.6.1
 python-pdf==0.37
 SQLAlchemy==1.3.10