diff --git a/examples/flask/requirements.txt b/examples/flask/requirements.txt
index 4385a34..219eeff 100644
--- a/examples/flask/requirements.txt
+++ b/examples/flask/requirements.txt
@@ -12,7 +12,7 @@ Flask-Bootstrap==3.3.7.1
 idna==2.7
 isort==4.3.4
 itsdangerous==0.24
-Jinja2==2.10
+Jinja2==2.11.3
 lazy-object-proxy==1.3.1
 MarkupSafe==1.0
 mccabe==0.6.1