diff --git a/requirements.txt b/requirements.txt
index 8785ace..c0f5c69 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -71,7 +71,7 @@ toml==0.10.1
 toolz==0.10.0
 torch==1.6.0
 torchvision==0.7.0
-tornado==6.0.4
+tornado==6.4.1
 traitlets==4.3.3
 tzlocal==2.1
 urllib3==1.26.5