diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 46f95ca..d09ecd4
--- a/requirements.txt
+++ b/requirements.txt
@@ -57,7 +57,7 @@ mock==3.0.5
 nbconvert==5.5.0
 nbformat==4.4.0
 nltk==3.4.1
-notebook==5.7.8
+notebook==6.4.10
 numpy==1.16.3
 packaging==19.0
 pandas==0.24.2