diff --git a/luigi/requirements.txt b/luigi/requirements.txt
old mode 100755
new mode 100644
index 74dca85..1a174c0
--- a/luigi/requirements.txt
+++ b/luigi/requirements.txt
@@ -43,7 +43,7 @@ nbconvert==5.3.1
 nbextensions==0.0.6
 nbformat==4.4.0
 networkx==2.0
-notebook==5.2.2
+notebook==5.7.8
 numexpr==2.6.4
 numpy==1.14.0
 olefile==0.44