diff --git a/requirements.txt b/requirements.txt
index 22b9d6e..6bb726c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ pytz==2019.3
 pyyaml==5.4
 scipy==1.4.1
 six==1.14.0
-tornado==6.0.3
+tornado==6.3.2
 scikit-learn
 tensorflow==1.15.0
 protobuf==3.20.2