RubyGems
puma
A Ruby/Rack web server built for parallelism.
multithreadingrackrubyserver
Release cadenceEvery 2 weeks
Last releaseMay 27, 2026
Open advisories0
Changelog quality100% curated
GitHub Releases + CHANGELOG
Release history SecurityYou're on
159 older or filtered releases not shown.
Upgrade guides
Breaking changes and a migration checklist for each major versionpuma 7 → 87.2.1 → 8.0.2May 26, 2026 BreakingBreaking1Security2New4Changed4Fixed2Other8puma 6 → 76.6.1 → 7.2.1May 27, 2026 BreakingBreaking8Security2Platform1New6Changed9Fixed22Other20puma 5 → 65.6.9 → 6.6.1Jul 31, 2025 BreakingBreaking2Security3New15Changed11Fixed29Other36puma 4 → 54.3.12 → 5.6.9Sep 19, 2024 BreakingSecurity2Platform1puma 3 → 43.12.6 → 4.3.12Mar 30, 2022 Unknownpuma 2 → 32.16.0 → 3.12.6May 19, 2020 Unknownpuma 1 → 21.6.3 → 2.16.0Jan 28, 2016 Unknownpuma 0.9 → 10.9.5 → 1.6.3Sep 4, 2012 Unknownpuma 0.8 → 0.90.8.2 → 0.9.5Mar 3, 2012 Unknown
VersionChannelDateChangesSecurity
8.0.2 StableMay 26, 2026Security2Fix8.0.1 StableApr 26, 2026Changed1Fixed1Other28.0.0 StableApr 9, 2026Breaking1New4Changed3Fixed1Other67.2.1 youStableMay 27, 2026Security2Fix7.2.0 StableJan 21, 2026New2Changed2Fixed4Other137.1.0 StableOct 17, 2025New1Changed1Fixed67.0.4 StableSep 23, 2025Changed1Fixed2Other17.0.3 StableSep 14, 2025Changed1Fixed17.0.2 StableSep 9, 2025Changed1Fixed27.0.1 StableSep 5, 2025Fixed17.0.0 StableSep 3, 2025Breaking8Platform1New3Changed2Fixed6Other67.0.0.pre1 RCJul 31, 2025Changed16.6.1 StableJul 31, 2025Fixed66.6.0 StableJan 28, 2025Breaking1New5Changed5Fixed3Other16.5.0 StableNov 22, 2024New10Changed5Fixed11Other96.4.3 StableSep 19, 2024Security1Fix6.4.2 StableJan 8, 2024Security1Fix6.4.1 StableJan 2, 2024Fixed9Other76.4.0 StableSep 21, 2023Other36.3.1 StableAug 18, 2023Security1Fix