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rack

A modular Ruby webserver interface.

About
rackrubyweb
github.com/rack/rackMITLeah Neukirchen5.1k · 1.7k forks · 576 contributors
Compare
Compares against 3.2.8 (latest stable)
Latest Stable3.2.8Oct 30, 2026
Latest RC3.0.0.rc1Sep 4, 2022
Latest Beta3.0.0.beta1Aug 8, 2022
Latest Alpha2.0.0.alphaDec 17, 2015
Release cadenceSeveral a day
Last releaseOct 30, 2026
Open advisories0
Changelog quality100% curated
CHANGELOG + GitHub Releases
Release history SecurityYou're on
3.x
STABLE · RCPRE-RELEASE2024AprJulOct2025AprJulOct2026AprJulOct

120 older or filtered releases not shown.

Upgrade guides

Breaking changes and a migration checklist for each major version
rack 2 → 32.2.25 → 3.2.8Oct 30, 2026 BreakingBreaking28Security36Deprecated5New23Changed48Fixed34Other4rack 1 → 21.6.13 → 2.2.25Oct 30, 2026 UnknownSecurity18New1Changed1Fixed2rack 0.9 → 10.9.1 → 1.6.13Feb 8, 2020 Unknownrack 0.4 → 0.90.4.0 → 0.9.1Jul 25, 2009 Unknownrack 0.3 → 0.40.3.0 → 0.4.0Jul 25, 2009 Unknownrack 0.2 → 0.30.2.0 → 0.3.0Jul 25, 2009 Unknownrack 0.1 → 0.20.1.0 → 0.2.0Jul 25, 2009 Unknown
VersionChannelDateChangesSecurity
3.2.8 StableOct 30, 2026No changes listed3.2.7 StableAug 13, 2026Fixed13.2.6 StableApr 1, 2026Security13Fix3.2.5 StableFeb 16, 2026Security2Fixed1Fix3.2.4 StableNov 2, 2025Fixed13.2.3 StableOct 10, 2025Security2Fix3.2.2 StableOct 7, 2025Security3Fix3.2.1 StableSep 2, 2025New1Fixed13.2.0 StableJul 30, 2025Breaking6Deprecated2New4Changed10Fixed33.1.23 youStableOct 30, 2026No changes listed3.1.22 StableAug 13, 2026Security1Fixed13.1.21 StableApr 1, 2026Security12Fix3.1.20 StableFeb 16, 2026Security2Fix3.1.19 StableNov 2, 2025Fixed13.1.18 StableOct 10, 2025Security2Fix3.1.17 StableOct 7, 2025Security3Fix3.1.16 StableJun 4, 2025Security1Fix3.1.15 StableMay 18, 2025Changed13.1.14 StableMay 6, 2025Security1Fix3.1.13 StableApr 13, 2025Fixed1