diff --git a/requirements.txt b/requirements.txt
index 21de4a74f0..abd12921e3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,5 +12,5 @@ psutil>=5.6.5; sys_platform == 'win32'
 python-dateutil
 requests
 SQLAlchemy>=1.1
-tornado>=5.1
+tornado>=6.5
 traitlets>=4.3.2