diff --git a/requirements.txt b/requirements.txt
index d5e408e..f4da9d3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ python-dateutil==2.9.0.post0
 pyzmq==26.2.0
 six==1.17.0
 stack-data==0.6.3
-tornado==6.4.2
+tornado==6.5.1
 traitlets==5.14.3
 wcwidth==0.2.13
 widgetsnbextension==4.0.13