diff --git a/apps/johntfoster-pge383-hw4/repo/requirements.txt b/apps/johntfoster-pge383-hw4/repo/requirements.txt
index a66eca8..00e1b5b 100644
--- a/apps/johntfoster-pge383-hw4/repo/requirements.txt
+++ b/apps/johntfoster-pge383-hw4/repo/requirements.txt
@@ -14,7 +14,7 @@ jupyter-core==4.0.6
 MarkupSafe==0.23
 matplotlib==1.4.3
 mistune==0.7.1
-nbconvert==4.0.0
+nbconvert==6.5.1
 nbformat==4.0.1
 nose==1.3.7
 notebook==4.0.6