diff --git a/requirements.txt b/requirements.txt
index 00d3793..c8a4b09 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ cycler==0.10.0
 Flask==1.0.2
 gunicorn==19.9.0
 itsdangerous==0.24
-Jinja2==2.11.3
+Jinja2==3.1.4
 kiwisolver==1.0.1
 MarkupSafe==1.0
 matplotlib==2.2.2