Cargo
tokio
An event-driven, non-blocking I/O platform for writing asynchronous I/O backed applications.
asynchronousnetworkingrust
github.com/tokio-rs/tokiotokio.rsMITAlice Ryhl, Eliza Weisman, Carl Lerche +222.1M / week33.5k · 5.2k forks · 1.1k contributors
Release cadenceSeveral a day
Last releaseOct 21, 2026
Open advisories0
Changelog quality80% curated
GitHub Releases, gaps for some releases
Release history SecurityYou're on
143 older or filtered releases not shown.
Upgrade guides
Breaking changes and a migration checklist for each major versiontokio 0.3 → 10.3.7 → 1.54.1Oct 21, 2026 BreakingBreaking20Security7Platform7Deprecated2New301Changed190Fixed283Other284tokio 0.2 → 0.30.2.25 → 0.3.7Jan 28, 2021 BreakingBreaking14Platform1New39Changed11Fixed16tokio 0.1 → 0.20.1.22 → 0.2.25Jan 28, 2021 BreakingBreaking8Deprecated1New107Changed16Fixed73Other11tokio 0.0 → 0.10.0.0 → 0.1.22Jul 3, 2019 UnknownFixed1
VersionChannelDateChangesSecurity
1.54.1 StableOct 21, 2026Security1Fixed1Fix1.54.0 YankedOct 19, 2026Platform1New11Changed21Fixed24Other81.53.3 youStableOct 13, 2026Security1Deprecated1New1Fixed6Fix1.53.2 StableOct 3, 2026Fixed171.53.1 StableJul 20, 2026Fixed2Other11.53.0 StableJul 17, 2026New3Changed8Fixed8Other151.52.4 StableJul 16, 2026Fixed21.52.3 StableMay 8, 2026Fixed41.52.2 StableMay 4, 2026New11.52.1 StableApr 16, 2026Fixed11.52.0 StableApr 14, 2026New7Changed2Fixed1Other21.51.6 StableOct 13, 2026Security1Deprecated1New1Fixed4Other1Fix1.51.5 StableOct 3, 2026Fixed151.51.4 StableJul 16, 2026Fixed11.51.3 StableMay 8, 2026Fixed41.51.2 StableMay 4, 2026New11.51.1 StableApr 8, 2026Fixed41.51.0 StableApr 3, 2026New5Changed1Fixed41.50.0 StableMar 3, 2026New4Changed8Fixed15Other101.49.0 StableJan 3, 2026New9Changed2Fixed4Other10