diff --git a/DeepPATH_code/requirements.txt b/DeepPATH_code/requirements.txt
old mode 100755
new mode 100644
index 01cc97b..ab1f709
--- a/DeepPATH_code/requirements.txt
+++ b/DeepPATH_code/requirements.txt
@@ -120,7 +120,7 @@ nilearn==0.5.0
 nimfa==1.4.0
 nipype==1.1.9
 nltk==3.3
-notebook==5.6.0
+notebook==6.4.12
 numba==0.53.1
 numexpr==2.6.9
 numpy==1.17.4