diff --git a/examples/requirements.txt b/examples/requirements.txt
index cff4717d2..8b90a05ff 100644
--- a/examples/requirements.txt
+++ b/examples/requirements.txt
@@ -44,7 +44,7 @@ six==1.16.0
 soupsieve==2.3.2.post1
 stack-data==0.4.0
 tinycss2==1.1.1
-tornado==6.3.3
+tornado==6.4.1
 traitlets==5.3.0
 wcwidth==0.2.5
 webencodings==0.5.1