v1.53.1: Tokio v1.53.1

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1.53.1 (July 20th, 2026)

Fixed

• signal: restore MSRV by removing OnceLock::wait from the Windows handler (#​8300)

Fixed (unstable)

• time: fix alt timer cancellation and insertion race (#​8252)

Documented

• runtime: remove dead link definition in Runtime::block_on (#​8301)

v1.53.0: Tokio v1.53.0

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1.53.0 (July 17th, 2026)

Added

• fs: implement From<OwnedFd> and From<OwnedHandle> for File (#​8266)
• metrics: add task schedule latency metric (#​7986)
• net: add SocketAddr methods to Unix sockets (#​8144)

Changed

• io: add #[inline] to IO trait impls for in-memory types (#​8242)
• net: implement UCred::pid on FreeBSD (#​8086)
• net: support Nuttx target os (#​8259)
• signal: refactor global variables on Windows (#​8231)
• sync: mpsc::{Receiver,UnboundedReceiver} now drops waker on drop, even if there are still senders (#​8095)
• taskdump: support taskdumps on s390x (#​8192)
• time: add #[track_caller] to timeout_at() (#​8077)
• time: consolidate mutex locks on spurious poll (#​8124)
• time: defer waker clone on spurious poll (#​8107)
• time: move lazy-registration state into Sleep (#​8132)
• tracing: remove unnecessary span clone (#​8126)

Fixed

• io: do not treat zero-length reads as EOF in Chain (#​8251)
• net: use getpeereid for QNX peer credentials (#​8270)
• runtime: avoid illegal state in FastRand (#​8078)
• sync: wake mpsc receiver when a queued reserve[_many] returns permits (#​8260)
• taskdump: skip double wake on Trace::capture/Trace::trace_with (#​8043)
• time: avoid stack overflow in runtime constructor (#​8093)
• time (alt timer): ensure timers stay in the same runtime after .reset() (#​8169)

IO uring (unstable)

• fs: use io-uring for fs::try_exists (#​8080)
• fs: use io-uring for renaming files (#​7800)
• rt: flush io-uring CQE in case of CQE overflow (#​8277)

Documented

• docs: clarify cancel safety wording (#​8181)
• fs: clarify create_dir_all succeeds if path exists (#​8149)
• io: add warning about stdout reordering with multiple handles (#​8276)
• net: document pipe try_read*/try_write* readiness behavior (#​8032)
• runtime: document interaction with fork() (#​8202)
• sync: clarify broadcast lagging semantics (#​8239)
• sync: document memory ordering guarantees for Semaphore (#​8119)
• task: explain why yield_now defers its waker (#​8254)
• time: add panic docs to timeout_at() (#​8077)
• time: fix reversed poll order in timeout doc (#​8214)

v1.52.4: Tokio v1.52.4

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1.52.4 (July 16th, 2026)

Fixed

• runtime: don't skip the driver when before_park schedules work (#​8222)

Fixed (unstable)

• taskdump: remove crate disambiguators from output (#​8264)

v1.52.3: Tokio v1.52.3

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1.52.3 (May 8th, 2026)

Fixed

• sync: fix underflow in mpsc channel len() (#​8062)
• sync: notify receivers in mpsc OwnedPermit::release() method (#​8075)
• sync: require that an RwLock has max_readers != 0 (#​8076)
• sync: return Empty from try_recv() when mpsc is closed with outstanding permits (#​8074)

v1.52.2: Tokio v1.52.2

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1.52.2 (May 4th, 2026)

This release reverts the LIFO slot stealing change introduced in 1.51.0 (#​7431), due to its performance impact. (#​8100)

v1.52.1: Tokio v1.52.1

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1.52.1 (April 16th, 2026)

Fixed

• runtime: revert #​7757 to fix a regression that causes spawn_blocking to hang (#​8057)

v1.52.0: Tokio v1.52.0

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1.52.0 (April 14th, 2026)

Added

• io: AioSource::register_borrowed for I/O safety support (#​7992)
• net: add try_io function to unix::pipe sender and receiver types (#​8030)

Added (unstable)

• runtime: Builder::enable_eager_driver_handoff setting enable eager hand off of the I/O and time drivers before polling tasks (#​8010)
• taskdump: add trace_with() for customized task dumps (#​8025)
• taskdump: allow impl FnMut() in trace_with instead of just fn() (#​8040)
• fs: support io_uring in AsyncRead for File (#​7907)

Changed

• runtime: improve spawn_blocking scalability with sharded queue (#​7757)
• runtime: use compare_exchange_weak() in worker queue (#​8028)

Fixed

• runtime: overflow second half of tasks when local queue is filled instead of first half (#​8029)

Documented

• docs: fix typo in oneshot::Sender::send docs (#​8026)
• docs: hide #[tokio::main] attribute in the docs of sync::watch (#​8035)
• net: add docs on ConnectionRefused errors with UDP sockets (#​7870)

v1.51.4: Tokio v1.51.4

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1.51.4 (July 16th, 2026)

Fixed

• runtime: don't skip the driver when before_park schedules work (#​8222)

v1.51.3: Tokio v1.51.3

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1.51.3 (May 8th, 2026)

Fixed

• sync: fix underflow in mpsc channel len() (#​8062)
• sync: notify receivers in mpsc OwnedPermit::release() method (#​8075)
• sync: require that an RwLock has max_readers != 0 (#​8076)
• sync: return Empty from try_recv() when mpsc is closed with outstanding permits (#​8074)

v1.51.2: Tokio v1.51.1

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1.51.2 (May 4th, 2026)

This release reverts the LIFO slot stealing change introduced in 1.51.0 (#​7431), due to its performance impact. (#​8100)

v1.51.1: Tokio v1.51.1

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1.51.1 (April 8th, 2026)

Fixed

• sync: fix semaphore reopens after forget (#​8021)
• net: surface errors from SO_ERROR on recv for UDP sockets on Linux (#​8001)

Fixed (unstable)

• metrics: fix worker_local_schedule_count test (#​8008)
• rt: do not leak fd when cancelling io_uring open operation (#​7983)

v1.51.0: Tokio v1.51.0

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1.51.0 (April 3rd, 2026)

Added

• net: implement get_peer_cred on Hurd (#​7989)
• runtime: add tokio::runtime::worker_index() (#​7921)
• runtime: add runtime name (#​7924)
• runtime: stabilize LocalRuntime (#​7557)
• wasm: add wasm32-wasip2 networking support (#​7933)

Changed

• runtime: steal tasks from the LIFO slot (#​7431)

Fixed

• docs: do not show "Available on non-loom only." doc label (#​7977)
• macros: improve overall macro hygiene (#​7997)
• sync: fix notify_waiters priority in Notify (#​7996)
• sync: fix panic in Chan::recv_many when called with non-empty vector on closed channel (#​7991)