Blog
Back to blog posts
15 Jan 2026
4.0.4 Released
by Hiroshi SHIBATA
RubyGems 4.0.4 includes enhancements and bug fixes and Bundler 4.0.4 includes 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=4.0.4
RubyGems Release Notes
Enhancements:
- Remove date require from rebuild command. Pull request #9232 by jeremyevans
- Installs bundler 4.0.4 as a default gem.
Bug fixes:
- Add a missing “require ‘etc’” statement:. Pull request #9242 by Edouard-chin
Bundler Release Notes
Enhancements:
Bug fixes:
Manual Installation
To install RubyGems by hand see the Download RubyGems page.
SHA256 Checksums:
- rubygems-4.0.4.tgz
89668a8eaba1a53c6f525221ab58cfe901dae41765b6f5e7ad2bd9c3119421e8 - rubygems-4.0.4.zip
eec3ac3fb8bc00ec8797c495b4aaa5930ad0539304bbe419761f8a4194ab29a8 - rubygems-update-4.0.4.gem
3c9f05b54dacb41ac6385f3793566a7b0ad7a0519fc412aa9bebdb181ed1dbd8