4.0.9

Ruby 4.0.9 portable binaries

Released by Ruby: 2026-10-23

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What's Changed

• Reject overflowed repeat/null-check IDs in huge regexps by makenowjust · Pull Request #16801

Note: This list is automatically generated by tool/gen-github-release.rb. Because of this, some commits may be missing.

Full Changelog

ruby/ruby@v4.0.8...v4.0.9