How do you enable Dependabot on a GitHub repository?

Enabling Dependabot has two largely independent paths depending on which feature you want: security updates/alerts are typically toggled directly in the repository's settings, while version updates require adding a configuration file to the repository.

#  Settings -> Code security and analysis -> enable:
#  - Dependency graph
#  - Dependabot alerts
#  - Dependabot security updates

#  For version updates, add to the repo:
#  .github/dependabot.yml

GitHub also offers a guided setup: clicking "Insights" → "Dependency graph" → "Dependabot" tab on a repository, or using the "Enable Dependabot" prompt that appears if GitHub detects the repository has no configuration yet, which can generate a starter dependabot.yml automatically based on the ecosystems it detects in the repo.

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