diff --git a/requirements.txt b/requirements.txt
index 8ae0376..1d0c18e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -392,7 +392,7 @@ terminado==0.18.1
     #   jupyter-server-terminals
 tinycss2==1.4.0
     # via bleach
-tornado==6.5.5
+tornado==6.5.6
     # via
     #   ipykernel
     #   jupyter-client