What is the "vendor" option in Dependabot configuration, and when is it needed?

vendor: true tells Dependabot that a project vendors its dependencies — meaning dependency source code is committed directly into the repository (rather than fetched from a remote registry at build/install time), a pattern common in some Go and Ruby projects for build reproducibility or offline build support.

updates:
  - package-ecosystem: "bundler"
    directory: "/"
    vendor: true
    schedule:
      interval: "weekly"

Without this flag, Dependabot would only update the manifest/lock file reference to a new version, leaving the actual vendored source code in the repository out of sync with what the manifest claims — setting vendor: true tells Dependabot to also update the actual vendored files to match, keeping both in consistent agreement rather than silently drifting apart.

Invest now in Acorns!!! 🚀
Join Acorns and get your $5 bonus!

Acorns is a micro-investing app that automatically invests your "spare change" from daily purchases into diversified, expert-built portfolios of ETFs. It is designed for beginners, allowing you to start investing with as little as $5. The service automates saving and investing. Disclosure: I may receive a referral bonus.

Invest now!!! Get Free equity stock (US, UK only)!

Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.

The Robinhood app makes it easy to trade stocks, crypto and more.

Webull! Receive free stock by signing up using the link: Webull signup.