diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 48a7412..a0b2eed
--- a/requirements.txt
+++ b/requirements.txt
@@ -58,7 +58,7 @@ nbconvert==5.2.1
 nbformat==4.3.0
 networkx==1.11
 nose==1.3.7
-notebook==5.0.0
+notebook==6.4.12
 numpy==1.13.0
 olefile==0.44
 pandocfilters==1.4.1