diff --git a/requirements.txt b/requirements.txt
index a02950a..511d9b4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -98,7 +98,7 @@ stack-data==0.6.3
     # via ipython
 tomli==2.0.1
     # via pytest
-tornado==6.3.3
+tornado==6.5
     # via
     #   ipykernel
     #   jupyter-client