diff --git a/docs/samples/custom/kfserving-custom-model/requirements.txt b/docs/samples/custom/kfserving-custom-model/requirements.txt
index 33e0252..c901d21 100644
--- a/docs/samples/custom/kfserving-custom-model/requirements.txt
+++ b/docs/samples/custom/kfserving-custom-model/requirements.txt
@@ -39,7 +39,7 @@ kubernetes==10.0.1
 MarkupSafe==1.1.1
 minio==5.0.7
 mistune==0.8.4
-nbconvert==5.6.1
+nbconvert==6.3.0
 nbformat==5.0.4
 notebook==6.0.3
 numpy==1.18.1