diff --git a/requirements.txt b/requirements.txt
index 7f5f638..24ae757 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -58,7 +58,7 @@ nbformat==5.0.7
 networkx==2.4
 nltk==3.5
 nmslib==2.0.6
-notebook==6.1.5
+notebook==6.4.1
 numexpr==2.7.1
 numpy==1.19.0
 packaging==20.4