diff --git a/binder/requirements.txt b/binder/requirements.txt
index 381ade8..35c36a5 100644
--- a/binder/requirements.txt
+++ b/binder/requirements.txt
@@ -8,4 +8,4 @@ py2neo
 pygal
 notebook==5.5
 jupyter_dashboards
-tornado==5.1.1
\ No newline at end of file
+tornado==6.3.3
\ No newline at end of file