update-notifier is a Node.js package that checks for available updates to your command-line tools and notifies users. By integrating this package into your CLI application, users are seamlessly informed about newer versions, encouraging them to keep their software up-to-date and benefit from the latest features and bug fixes. update-notifier enhances the user experience, reduces support requests, and helps maintain a healthy ecosystem for your package. It supports various notification methods making it a versatile choice for different environments.