diff --git a/python_requirements.txt b/python_requirements.txt
index 7fcfdf97ba..c7d10ac379 100644
--- a/python_requirements.txt
+++ b/python_requirements.txt
@@ -873,7 +873,7 @@ toml==0.10.2
     # via
     #   -r requirements.in
     #   swcc
-tornado==6.5.2
+tornado==6.5.5
     # via
     #   -r requirements.in
     #   bokeh