ChefDK was first shipped in 2014 and reached end-of-life status on December 31, 2020. ChefDK has since been replaced with Chef Workstation. To upgrade from ChefDK to Chef Workstation, all you need to do is install the Chef Workstation
download package from the Chef Workstation download page. The Chef Workstation package will replace your existing ChefDK installation, and you’ll be ready to
enjoy all the new functionality provided in Chef Workstation.
If you still need end-of-life versions of ChefDK, you can download them from the bottom of the Chef Workstation download page.