diff --git a/requirements.txt b/requirements.txt
index ab491ed..0701426 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ more-itertools==8.0.0
 nbconvert==5.6.1
 nbformat==4.4.0
 networkx==2.4
-notebook==6.1.5
+notebook==6.4.1
 numpy==1.17.4
 opencv-python==4.1.2.30
 ortoolpy==0.2.25