diff --git a/wordcloud_demo/requirements.txt b/wordcloud_demo/requirements.txt
index 8bc10c9..7626f5f 100644
--- a/wordcloud_demo/requirements.txt
+++ b/wordcloud_demo/requirements.txt
@@ -29,7 +29,7 @@ ipython-genutils==0.2.0
 isort==4.2.13
 itsdangerous==0.24
 jedi==0.11.1
-Jinja2==2.9.6
+Jinja2==2.11.3
 jsonschema==2.6.0
 jupyter-client==5.2.0
 jupyter-core==4.4.0