diff --git a/legacy/openCV/requirements.txt b/legacy/openCV/requirements.txt
index e709f4f..aa82e30 100644
--- a/legacy/openCV/requirements.txt
+++ b/legacy/openCV/requirements.txt
@@ -30,7 +30,7 @@ matplotlib==3.0.0
 mistune==0.8.4
 nbconvert==5.4.0
 nbformat==4.4.0
-notebook==5.7.8
+notebook==6.4.10
 numpy==1.15.2
 opencv-python==3.4.3.18
 pandocfilters==1.4.2