diff --git a/doc/requirements.txt b/doc/requirements.txt
index 8905bc8436..285f4620d3 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -254,7 +254,7 @@ tomli==2.0.1
     #   build
     #   pip-tools
     #   pyproject-hooks
-tornado==6.4
+tornado==6.4.1
     # via
     #   ipykernel
     #   jupyter-client