diff --git a/legacy-server/requirements.txt b/legacy-server/requirements.txt
index 0acbc21..c6eccad 100644
--- a/legacy-server/requirements.txt
+++ b/legacy-server/requirements.txt
@@ -1,2 +1,2 @@
-tornado==4.4.2
+tornado==6.3.3
 webrtcvad==2.0.10