diff --git a/requirements/deployment.txt b/requirements/deployment.txt
index 8c8f2d1b..0ddd9e2b 100644
--- a/requirements/deployment.txt
+++ b/requirements/deployment.txt
@@ -220,7 +220,7 @@ toolz==0.12.0
     #   datacube
     #   distributed
     #   partd
-tornado==6.1
+tornado==6.4.2
     # via distributed
 urllib3==1.26.19
     # via
diff --git a/requirements/test.txt b/requirements/test.txt
index d43d9c9c..08f3355a 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -334,7 +334,7 @@ toolz==0.12.0
     #   datacube
     #   distributed
     #   partd
-tornado==6.1
+tornado==6.4.2
     # via distributed
 typing-extensions==4.4.0
     # via pydantic