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Release Notes

Latest Changes

0.0.18 (2026-06-25)

Features

  • ✨ Add Agent Library Skill, install with uvx library-skills. PR #627 by @tiangolo.

Upgrades

  • 🔧 Upgrade Zensical, refactor and improve its usage. PR #590 by @tiangolo.

Docs

  • 📝 Update docs badges: remove Publish badge, it doesn't give extra information. PR #619 by @tiangolo.
  • 📝 Update and simpify docs about help and management. PR #598 by @tiangolo.
  • 📝 Update contributing docs, add references to central docs. PR #597 by @tiangolo.
  • 📝 Update security policy. PR #595 by @tiangolo.
  • 🔒️ Only allow team members to modify dependencies. PR #592 by @svlandeg.
  • 📝 Add dates to release notes. PR #491 by @YuriiMotov.
  • 📝 Update link syntax to minimal Markdown. PR #500 by @tiangolo.
  • 🔨 Handle external links target=_blank and CSS automatically in JS and CSS. PR #499 by @tiangolo.
  • 📝 Fix docstring example for TaskGroup.soonify(). PR #269 by @asifr.

Internal

0.0.17 (2026-02-21)

Internal

  • 👷 Fix CI, prevent CI from trying to build asyncer-slim. PR #480 by @tiangolo.

0.0.16 (2026-02-21)

Internal

  • ➖ Drop support for asyncer-slim, no more versions will be released, use only asyncer. PR #479 by @tiangolo.

0.0.15 (2026-02-20)

Breaking Changes

Internal

0.0.14 (2026-02-16)

Internal

0.0.13 (2026-02-11)

Docs

  • 📝 Update management-tasks.md to be in line with management-tasks.md in FastAPI repo. PR #462 by @YuriiMotov.
  • 📝 Add contribution instructions about LLM generated code and comments and automated tools for PRs. PR #449 by @alejsdev.
  • 🐛 Fix copy button in custom.js. PR #448 by @alejsdev.

Internal

0.0.12 (2025-12-26)

Breaking Changes

Docs

  • 📝 Update code examples to Python 3.9. PR #442 by @YuriiMotov.
  • 📝 Relax the warnings as I have been using Asyncer in production for a while (and other teams as well). PR #424 by @tiangolo.

Internal

  • ⬆️ Use prek as a pre-commit alternative. PR #437 by @YuriiMotov.
  • 👷 Configure coverage, error on main tests, don't wait for Smokeshow. PR #435 by @YuriiMotov.
  • 👷 Run Smokeshow always, even on test failures. PR #434 by @YuriiMotov.
  • 🔥 Remove Material for MkDocs Insiders extra files. PR #432 by @tiangolo.

0.0.11 (2025-12-01)

Fixes

  • 📝 Add sniffio dependency to project requirements. PR #421 by @jujumilk3.

Docs

  • 📝 Update docs to use markdown-include-variants. PR #419 by @YuriiMotov.
  • 💅 Update CSS to explicitly use emoji font. PR #420 by @tiangolo.

Internal

0.0.10 (2025-10-20)

Upgrades

Internal

0.0.9 (2025-10-01)

Fixes

  • 👽️ Ensure compatibility with AnyIO 4.11.0. PR #381 by @svlandeg.

Docs

  • 🩺 Take the GH badge only from pushes to the main branch. PR #284 by @svlandeg.

Internal

0.0.8 (2024-08-24)

Refactors

  • ♻️ Deprecate asyncify(cancellable=True) in favor of asyncify(abandon_on_cancel=True), following AnyIO 4.1.0. PR #202 by @tiangolo.
  • ♻️ Import anyio.from_thread and anyio.to_thread explicitly. PR #201 by @tiangolo.
  • ♻️ Update asyncify to wrap the function with functools.wraps like the other functions. PR #84 by @Gowee.

Docs

  • 📝 Add docs references to FastAPI's docs on virtual environments and new contributing guide. PR #200 by @tiangolo.
  • 📝 Add docs about repo management and team. PR #184 by @tiangolo.

Internal

0.0.7 (2024-04-30)

Internal

In the future Asyncer can include the standard default recommended packages, and asyncer-slim can come without those recommended standard packages and with a group of optional dependencies asyncer-slim[standard], equivalent to asyncer, for those that want to opt out of those packages.

0.0.6 (2024-04-30)

Internal

0.0.5 (2024-02-22)

Fixes

  • 🐛 Fix syncify with raise_sync_error=False on AnyIO 4.x.x, do not start new event loops unnecessarily. PR #130 by @tiangolo.

Internal

  • 👷 Update Publish CI Python version to 3.11. PR #120 by @tiangolo.

0.0.4 (2024-01-28)

Docs

  • 📝 Update docstring for syncify(), fix name of parameter raise_sync_error (remove unused parameter name check_called_from_async). PR #113 by @giladsheffer.

Internal

  • 🔧 Add Ruff config. PR #112 by @tiangolo.
  • 🔧 Adopt Ruff for formatting and linting and upgrade internal tools. PR #111 by @tiangolo.

0.0.3 (2024-01-23)

Features

  • ✨ Export (import and re-export) TaskGroup from asyncer. PR #87 by @MarkParker5.
  • ✨ Add support for AnyIO 4.x, drop support for Python 3.7. PR #90 by @khiemdoan.

Fixes

  • 🐛 Add missing dependency typing_extensions for Python < 3.10. PR #89 by @ZhymabekRoman.

Refactors

Docs

  • 👷 Upgrade CI for docs. PR #78 by @tiangolo.
  • 🛠️ Tweak internal CI actions, add --no-cache-dir at Dockfile files. PR #52 by @realFranco.
  • 📝 Update help Asyncer docs. PR #65 by @tiangolo.
  • 🍱 Update logo vector asset, do not depend on system fonts. PR #60 by @tiangolo.

Internal

0.0.2 (2022-11-04)

Features

  • ✨ Add compatibility with the next (unreleased) version of AnyIO (4.x.x), with get_asynclib utility. PR #48 by @tiangolo.

Docs

  • ✏ Fix link to FastAPI and Friends newsletter. PR #13 by @JonasKs.
  • ✏ Fix typo in docs/tutorial/first-steps.md, from asyncio to anyio. PR #11 by @windson.
  • ✏️ Fix broken link in README and index. PR #9 by @vrslev.
  • ✏ Fix typo in syncify-no-raise.md. PR #6 by @Kludex.

Internal

0.0.1 (2022-01-04)

  • First release. 🎉

Docs