diff --git a/requirements.txt b/requirements.txt
index a6aca0535a12..02dd3920720d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -427,7 +427,7 @@ toolz==1.1.0
     # via
     #   dask
     #   partd
-tornado==6.5.2
+tornado==6.5.3
     # via
     #   ipykernel
     #   jupyter-client