diff --git a/requirements.txt b/requirements.txt
index b9e7e9e..00ae3ca 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -125,7 +125,7 @@ tenacity==8.2.3
 toml==0.10.2
 tomlkit==0.12.3
 toolz==0.12.0
-tornado==6.2
+tornado==6.4.2
 tqdm==4.66.1
 traitlets==5.9.0
 trio==0.22.2