Blog
Back to blog posts
11 Mar 2026
4.0.8 Released
by Hiroshi SHIBATA
RubyGems 4.0.8 includes enhancements and documentation and Bundler 4.0.8 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=4.0.8
RubyGems Release Notes
Enhancements:
- Use JSON for cargo metadata parsing. Pull request #9373 by hsbt
- Fix NameError in Gem::Request.get_proxy_from_env when requiring rubygems/request directly. Pull request #9362 by afurm
- Installs bundler 4.0.8 as a default gem.
Documentation:
- Unify Compact Index API naming. Pull request #9372 by simi
Bundler Release Notes
Enhancements:
- Add a new Bundler config to control how many specs are fetched #9363
- Restrict GitHub Actions workflow permissions for newgem #9361
Bug fixes:
- Fix plugin new version not registering #9355
Manual Installation
To install RubyGems by hand see the Download RubyGems page.
SHA256 Checksums:
- rubygems-4.0.8.tgz
b18663def26384e467f2594bf27190c580771df0ca7ba444afa1d76609881813 - rubygems-4.0.8.zip
205198b7513521d2ba358e6b4df88924601be89b329d2b49fc0c0f55e41b167b - rubygems-update-4.0.8.gem
3465eef02174a0bbad1f8d343eff67a33e7fc6eeb84cf69f1d1ca77ce565045c