diff --git a/CPU_Mac_Requirements.txt b/CPU_Mac_Requirements.txt
index 2b3f3d1..fb1b241 100644
--- a/CPU_Mac_Requirements.txt
+++ b/CPU_Mac_Requirements.txt
@@ -56,7 +56,7 @@ mccabe==0.6.1
 medpy==0.4.0
 mistune==0.8.4
 mock==3.0.5
-nbconvert==5.5.0
+nbconvert==6.5.1
 nbformat==4.4.0
 ncurses==6.1
 networkx==2.3