diff --git a/demo-bottle/requirements.txt b/demo-bottle/requirements.txt
index 1e0c9b0..33ba1b2 100644
--- a/demo-bottle/requirements.txt
+++ b/demo-bottle/requirements.txt
@@ -1,4 +1,4 @@
 bottle==0.12.20
 beaker==1.6.4
 paste==1.7.5.1
-jinja2==2.11.3
+jinja2==3.1.3