diff --git a/API/pythonCppAPI/requirements.txt b/API/pythonCppAPI/requirements.txt
old mode 100755
new mode 100644
index a0754b2d..60847490
--- a/API/pythonCppAPI/requirements.txt
+++ b/API/pythonCppAPI/requirements.txt
@@ -40,7 +40,7 @@ mistune==0.8.4
 nbconvert==5.5.0
 nbformat==4.4.0
 networkx==2.3
-notebook==5.7.8
+notebook==6.1.5
 numpy==1.16.4
 opencv-python==4.1.0.25
 pandocfilters==1.4.2