diff --git a/(1)TutorialPython_IPYTHON/requirements.txt b/(1)TutorialPython_IPYTHON/requirements.txt
index 1f85101..6ed8955 100644
--- a/(1)TutorialPython_IPYTHON/requirements.txt
+++ b/(1)TutorialPython_IPYTHON/requirements.txt
@@ -58,7 +58,7 @@ mpmath==1.1.0
 nbconvert==5.5.0
 nbformat==4.4.0
 nervananeon==2.6.0
-notebook==6.0.0
+notebook==6.4.1
 numexpr==2.6.9
 numpy==1.16.4
 packaging==19.0