No breaking-change keywords detected in release notes.
0.138.0
2026-06-20
No breaking-change keywords detected in release notes.
0.137.2
2026-06-18
⚠ Potential breaking changes
⏪️ Revert removing scripts, only remove `coverage.sh`. PR [#15772](https://github.com/fastapi/fastapi/pull/15772) by [@tiangolo](https://github.com/tiangolo).
🔥 Remove unused scripts. PR [#15771](https://github.com/fastapi/fastapi/pull/15771) by [@tiangolo](https://github.com/tiangolo).
0.137.1
2026-06-15
No breaking-change keywords detected in release notes.
0.137.0
2026-06-14
⚠ Potential breaking changes
Breaking Changes
Specific Breaking Changes
Now `router.routes` is no longer a plain list of `APIRoute` objects, it can contain these intermediate objects that can contain additional routers, forming a tree.
Any logic that depended on iterating on the `router.routes` directly would be affected, that logic cannot expect to be able to extract data from a plain list of routes, as it's no longer a plain list but a tree.
Still, for now, consider this very experimental and potentially changing and breaking in the future.
📝 Remove "NGINX Unit" from the list of ASGI-servers in docs. PR [#15475](https://github.com/fastapi/fastapi/pull/15475) by [@angryfoxx](https://github.com/angryfoxx).
🔧 Update sponsors: remove TalorData. PR [#15744](https://github.com/fastapi/fastapi/pull/15744) by [@tiangolo](https://github.com/tiangolo).
🔧 Update sponsors: remove ExoFlare. PR [#15736](https://github.com/fastapi/fastapi/pull/15736) by [@tiangolo](https://github.com/tiangolo).
🔧 Update sponsors: remove InterviewPal. PR [#15735](https://github.com/fastapi/fastapi/pull/15735) by [@tiangolo](https://github.com/tiangolo).
🔧 Update sponsors: remove Liblab. PR [#15731](https://github.com/fastapi/fastapi/pull/15731) by [@tiangolo](https://github.com/tiangolo).
0.136.3
2026-05-23
No breaking-change keywords detected in release notes.
0.136.2
2026-05-23
⚠ Potential breaking changes
🔥 Remove config files now in central GitHub repo. PR [#15585](https://github.com/fastapi/fastapi/pull/15585) by [@tiangolo](https://github.com/tiangolo).
🔧 Migrate docs from MkDocs to Zensical. PR [#15563](https://github.com/fastapi/fastapi/pull/15563) by [@tiangolo](https://github.com/tiangolo).
🔧 Remove Ruff ignored rule for tabs. PR [#15533](https://github.com/fastapi/fastapi/pull/15533) by [@tiangolo](https://github.com/tiangolo).
0.136.1
2026-04-23
⚠ Potential breaking changes
⬆️ Update Pydantic v2 code to address deprecations. PR [#15101](https://github.com/fastapi/fastapi/pull/15101) by [@svlandeg](https://github.com/svlandeg).
🔧 Update sponsors: remove Zuplo. PR [#15369](https://github.com/fastapi/fastapi/pull/15369) by [@tiangolo](https://github.com/tiangolo).
🔧 Update sponsors: remove Speakeasy. PR [#15368](https://github.com/fastapi/fastapi/pull/15368) by [@tiangolo](https://github.com/tiangolo).