diff --git a/lets/requirements.txt b/lets/requirements.txt
index f53621f..23c21d4 100644
--- a/lets/requirements.txt
+++ b/lets/requirements.txt
@@ -1,4 +1,4 @@
-tornado==4.4.2
+tornado==6.3.2
 mysqlclient==1.4.5
 progressbar2==3.38.0
 raven==5.32.0