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What’s New in v2.3

The Bundler 2.3 announcement includes context and a more detailed explanation of the changes in this version. This is a summary of the biggest changes. As always, a detailed list of every change is provided in the changelog.

Bundler Version Locking

Bundler is now able to lock itself! The Bundler version used to create Gemfile.lock will be used for all future runs of bundle install. Upgrade Bundler for your app by running bundle update --bundler. (Requires RubyGems 3.3 or higher.)

Other improvements

Bundler 2.3 also includes other improvements like enhancements bundle gem or bundle add, and deprecation messages to make dropping support for old rubies in the future smoother.

Full 2.3 changelog

Edit this document on GitHub if you caught an error or noticed something was missing.