diff --git a/dash-heroku-master/requirements.txt b/dash-heroku-master/requirements.txt
index a61c9df..d08d0be 100644
--- a/dash-heroku-master/requirements.txt
+++ b/dash-heroku-master/requirements.txt
@@ -116,7 +116,7 @@ networkx==2.3
 neupy==0.8.2
 nltk==3.4.5
 nose==1.3.7
-notebook==6.0.1
+notebook==6.4.1
 numba==0.45.1
 numexpr==2.7.0
 numpy==1.17.0