diff --git a/flask_app1/requirements.txt b/flask_app1/requirements.txt
index 81d188a..fc53c2c 100644
--- a/flask_app1/requirements.txt
+++ b/flask_app1/requirements.txt
@@ -2,7 +2,7 @@ appdirs==1.4.2
 click==6.7
 Flask==0.12
 itsdangerous==0.24
-Jinja2==2.9.5
+Jinja2==2.11.3
 MarkupSafe==0.23
 packaging==16.8
 pkg-resources==0.0.0