diff --git a/requirements.txt b/requirements.txt
index d1f6d2d..5712882 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ matplotlib==3.0.2
 mistune==0.8.4
 nbconvert==5.4.1
 nbformat==4.4.0
-notebook==5.7.8
+notebook==6.4.12
 numpy==1.15.4
 opencv-contrib-python==4.0.0.21
 opencv-python==4.0.0.21