diff --git a/requirements_py3_refactored.txt b/requirements_py3_refactored.txt
old mode 100755
new mode 100644
index a5d4d22..aed720a
--- a/requirements_py3_refactored.txt
+++ b/requirements_py3_refactored.txt
@@ -75,7 +75,7 @@ multiprocess==0.70.5
 nbconvert==5.3.1
 nbformat==4.4.0
 nltk==3.2.2
-notebook==5.5.0
+notebook==6.4.12
 numpy==1.12.1
 openpyxl==2.4.7
 packaging==16.8