diff --git a/Demos/requirements.txt b/Demos/requirements.txt
index ba3eb75..86dc377 100644
--- a/Demos/requirements.txt
+++ b/Demos/requirements.txt
@@ -214,7 +214,7 @@ terminado==0.8.3
 testpath==0.4.4
 times==0.7
 toml==0.10.0
-tornado==6.3.2
+tornado==6.4.1
 tox==3.14.2
 traitlets==4.3.3
 typed-ast==1.4.0