diff --git a/Semana 9/dataset/requirements.txt b/Semana 9/dataset/requirements.txt
old mode 100755
new mode 100644
index c1fefea..10576cf
--- a/Semana 9/dataset/requirements.txt	
+++ b/Semana 9/dataset/requirements.txt	
@@ -20,7 +20,7 @@ jupyter-core==4.4.0
 MarkupSafe==1.0
 mistune==0.8.3
 more-itertools==4.2.0
-nbconvert==5.3.1
+nbconvert==6.3.0
 nbformat==4.4.0
 notebook==5.5.0
 numpy==1.14.5