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09 Dec 2025
4.0.1 Released
by Hiroshi SHIBATA
RubyGems 4.0.1 includes enhancements, bug fixes and documentation and Bundler 4.0.1 includes performance, enhancements and bug fixes.
To update to the latest RubyGems you can run:
gem update --system [--pre]
To update to the latest Bundler you can run:
gem install bundler [--pre]
bundle update --bundler=4.0.1
RubyGems Release Notes
Enhancements:
- Installs bundler 4.0.1 as a default gem.
Bug fixes:
- Fixed unexpected default bundler installation. Pull request #9167 by hsbt
Documentation:
- Update contributing docs with
RGV. Pull request #9155 by eileencodes
Bundler Release Notes
Performance:
- Increase connection pool to allow for up to 70% speed increase on
bundle install#9087
Enhancements:
- Fix the config suggestion in the warning for
$ bundle#9164 - Fix native extension loading in newgem template for RHEL-based systems #9156
Bug fixes:
- Fix Bundler removing executables after creating them #9169
Manual Installation
To install RubyGems by hand see the Download RubyGems page.
SHA256 Checksums:
- rubygems-4.0.1.tgz
efbdf2a575544198f0f9516dbffac2b0d576fbb504aea6d52d1976d0db512652 - rubygems-4.0.1.zip
98b829062f6f030603ed2243b9d05c6db6718c04b6d8589d68038474ec99adf3 - rubygems-update-4.0.1.gem
c2ff99782fc56f649d04edb3f88bbbb6c50d731d8dc87e2c0670dc79536e5c73