diff --git a/Semana 9/dataset/requirements.txt b/Semana 9/dataset/requirements.txt
old mode 100755
new mode 100644
index c1fefea..0a85300
--- a/Semana 9/dataset/requirements.txt	
+++ b/Semana 9/dataset/requirements.txt	
@@ -22,7 +22,7 @@ mistune==0.8.3
 more-itertools==4.2.0
 nbconvert==5.3.1
 nbformat==4.4.0
-notebook==5.5.0
+notebook==6.4.10
 numpy==1.14.5
 pandas==0.23.1
 pandocfilters==1.4.2
diff --git a/Semana 9/requirements.txt b/Semana 9/requirements.txt
index 0eee2d5..7210503 100644
--- a/Semana 9/requirements.txt	
+++ b/Semana 9/requirements.txt	
@@ -50,7 +50,7 @@ mistune==0.8.4
 more-itertools==7.0.0
 nbconvert==5.5.0
 nbformat==4.4.0
-notebook==6.1.1
+notebook==6.4.10
 numpy==1.16.4
 packaging==19.0
 pandas==0.24.2