diff --git a/flask/requirements.txt b/flask/requirements.txt
index e223fa6..264a804 100644
--- a/flask/requirements.txt
+++ b/flask/requirements.txt
@@ -27,7 +27,7 @@ guess-language-spirit==0.5.3
 httpie==1.0.3
 idna==2.7
 itsdangerous==0.24
-Jinja2==2.10.1
+Jinja2==2.11.3
 kombu==4.2.1
 Mako==1.0.7
 MarkupSafe==1.0