diff --git a/requirements/docs.txt b/requirements/docs.txt
index cf5d779c..b1c94401 100644
--- a/requirements/docs.txt
+++ b/requirements/docs.txt
@@ -190,7 +190,7 @@ stack-data==0.6.3
     # via ipython
 tinycss2==1.3.0
     # via nbconvert
-tornado==6.4
+tornado==6.4.1
     # via
     #   ipykernel
     #   jupyter-client