Nvidia-release-upgrade cannot be installed

Updating from DGX OS 4 to 5.

cat /etc/dgx-release | grep VERSION
DGX_SWBUILD_VERSION="4.2.0"
DGX_OTA_VERSION="4.6.0"

Referring to the following site.
https://docs.nvidia.com/dgx/dgx-os-5-user-guide/upgrading.html#performing-a-release-upgrade-from-dgx-os-4

The following problem occurs.

sudo apt install -y nvidia-release-upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package nvidia-release-upgrade

I have already executed the below commands.

sudo apt update
sudo apt -y full-upgrade