diff --git a/requirements.txt b/requirements.txt
index 30b3028eb6..478c3b84c2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,5 +14,5 @@ pydantic>=2
 python-dateutil
 requests
 SQLAlchemy>=1.4.1
-tornado>=5.1
+tornado>=6.5.5
 traitlets>=4.3.2