diff --git a/docs/requirements-dev.txt b/docs/requirements-dev.txt
index 0c6470a..a24d021 100644
--- a/docs/requirements-dev.txt
+++ b/docs/requirements-dev.txt
@@ -380,7 +380,7 @@ threadpoolctl==3.5.0
     #   -c docs/requirements.txt
     #   imbalanced-learn
     #   scikit-learn
-tornado==6.4
+tornado==6.4.1
     # via
     #   -c docs/requirements.txt
     #   ipykernel
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 37bcc10..e1b5a04 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -220,7 +220,7 @@ threadpoolctl==3.5.0
     # via
     #   imbalanced-learn
     #   scikit-learn
-tornado==6.4
+tornado==6.4.1
     # via
     #   ipykernel
     #   jupyter-client