Renovate Bot is an automated dependency management tool that scans your repositories and creates pull requests to update packages. It detects outdated dependencies, vulnerability patches, and library updates, then opens PRs with changelogs and testing results. Unlike manual updates, Renovate handles the continuous work of keeping dependencies fresh and secure. The tool integrates with GitHub, GitLab, and Bitbucket, runs on a schedule you define, and provides sophisticated grouping and scheduling options. You can configure it to group related updates, skip certain packages, update on specific days, or prioritize security patches.