diff --git a/binder/requirements.txt b/binder/requirements.txt
index 4b01c36..5f73e70 100644
--- a/binder/requirements.txt
+++ b/binder/requirements.txt
@@ -5,7 +5,7 @@ neo4j
 py2neo
 notebook==5.5
 jupyter_dashboards
-tornado==5.1.1
+tornado==6.3.3
 ipython-cypher
 pygal
 plotly