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bundle-lock(1)

bundle-lock - Creates / Updates a lockfile without installing

BUNDLE-LOCK(1) General Commands Manual BUNDLE-LOCK(1)

bundle-lock - Creates / Updates a lockfile without installing

bundle lock [--update] [--bundler[=BUNDLER]] [--local] [--print] [--lockfile=PATH] [--full-index] [--gemfile=GEMFILE] [--add-checksums] [--add-platform] [--remove-platform] [--normalize-platforms] [--patch] [--minor] [--major] [--pre] [--strict] [--conservative] [--cooldown=NUMBER]

Lock the gems specified in Gemfile.

Ignores the existing lockfile. Resolve then updates lockfile. Taking a list of gems or updating all gems if no list is given.
Update the locked version of bundler. BUNDLER can be a version such as 4.0.20, or a requirement such as "> 0.a". With no argument, update to the latest released version, which never selects a prerelease.
Do not attempt to connect to rubygems.org. Instead, Bundler will use the gems already present in Rubygems' cache or in vendor/cache. Note that if a appropriate platform-specific gem exists on rubygems.org it will not be found.
Prints the lockfile to STDOUT instead of writing to the file system.
The path where the lockfile should be written to.
Fall back to using the single-file index of all gems.
Use the specified gemfile instead of [Gemfile(5)][Gemfile(5)].
Add checksums to the lockfile.
Add a new platform to the lockfile, re-resolving for the addition of that platform.
Remove a platform from the lockfile.
Normalize lockfile platforms.
If updating, prefer updating only to next patch version.
If updating, prefer updating only to next minor version.
If updating, prefer updating to latest major version (default).
If updating, always choose the highest allowed version, regardless of prerelease status.
If updating, do not allow any gem to be updated past latest --patch | --minor | --major.
If updating, use bundle install conservative update behavior and do not allow shared dependencies to be updated.
Only consider gem versions published at least number days ago when resolving. Pass 0 to disable cooldown for this run, overriding any per-source or global configuration. See cooldown in bundle-config(1).

If you run bundle lock with --update option without list of gems, bundler will ignore any previously installed gems and resolve all dependencies again based on the latest versions of all gems available in the sources.

Sometimes, you want to update a single gem in the Gemfile(5), and leave the rest of the gems that you specified locked to the versions in the Gemfile.lock.

For instance, you only want to update nokogiri, run bundle lock --update nokogiri.

Bundler will update nokogiri and any of its dependencies, but leave the rest of the gems that you specified locked to the versions in the Gemfile.lock.

If you want your bundle to support platforms other than the one you're running locally, you can run bundle lock --add-platform PLATFORM to add PLATFORM to the lockfile, force bundler to re-resolve and consider the new platform when picking gems, all without needing to have a machine that matches PLATFORM handy to install those platform-specific gems on.

For a full explanation of gem platforms, see gem help platform.

See bundle update(1) bundle-update.1.html for details.

April 2026

ruby4.0-bundler 4.0.23-r0 · os · ingested 2026-10-15