diff --git a/Computer Vision/CS131/HW4/requirements.txt b/Computer Vision/CS131/HW4/requirements.txt
index c3795a1..11bec2a 100644
--- a/Computer Vision/CS131/HW4/requirements.txt	
+++ b/Computer Vision/CS131/HW4/requirements.txt	
@@ -17,7 +17,7 @@ jupyter-core==4.3.0
 MarkupSafe==1.0
 matplotlib==2.0.2
 mistune==0.7.4
-nbconvert==5.2.1
+nbconvert==6.3.0
 nbformat==4.3.0
 networkx==1.11
 notebook==5.0.0