diff --git a/app/requirements.txt b/app/requirements.txt
index 53bafc0..343b563 100644
--- a/app/requirements.txt
+++ b/app/requirements.txt
@@ -22,7 +22,7 @@ requests>=2.20.0
 singledispatch==3.4.0.3
 six==1.10.0
 socketIO-client==0.7.0
-tornado==4.4.1
+tornado==6.3.3
 websocket-client==0.37.0
 Werkzeug==2.2.3