diff --git a/ncli/requirements.txt b/ncli/requirements.txt
index 839f0d5e5..ab04fb99c 100644
--- a/ncli/requirements.txt
+++ b/ncli/requirements.txt
@@ -79,7 +79,7 @@ stack-data==0.1.4
 terminado==0.12.1
 testpath==0.5.0
 tomli==1.2.3
-tornado==6.1
+tornado==6.3.2
 traitlets==5.1.1
 typing_extensions==4.0.1
 wcwidth==0.2.5