diff --git a/requirements.txt b/requirements.txt
index b29dbcc..eddfd25 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -46,7 +46,7 @@ ipywidgets==7.0.3
 itsdangerous==0.24
 Janome==0.3.5
 jedi==0.11.0
-Jinja2==2.9.6
+Jinja2==2.11.3
 jsonschema==2.6.0
 jupyter==1.0.0
 jupyter-client==5.1.0