diff --git a/requirements.txt b/requirements.txt
index 02da59b..6b94791 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ opera==0.6.8
 # openapi
 connexion[swagger-ui] == 2.7.0
 python-dateutil >= 2.8.1
-tornado==6.1
+tornado==6.3.2
 
 # PostgreSQL
 psycopg2==2.9.3