diff --git a/requirements.txt b/requirements.txt
index 7287ffe..370e687 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -184,7 +184,7 @@ tblib==1.3.2
 terminado==0.8.1
 testpath==0.4.2
 toolz==0.9.0
-tornado==6.0.2
+tornado==6.5
 tqdm==4.31.1
 traitlets==4.3.2
 typed-ast==1.3.5