FastAPI 0.139.1 is out, addressing a critical bug in frontend fallback support for paths containing dots. This release also brings comprehensive translation updates across 13 languages.
- Bug fix: Frontend fallback now correctly handles dotted paths such as
/users/john.doe. Previously, such paths might not fall back properly to the frontend. PR #16011 by @tiangolo. - Documentation fix: The topic repository list now displays correctly, and the
skip_usersparameter is properly applied. PR #15995 by @YuriiMotov. - Translation updates: Updated outdated translations for Turkish (
tr), Traditional Chinese (zh-hant), French (fr), German (de), Korean (ko), Simplified Chinese (zh), Ukrainian (uk), Japanese (ja), Portuguese (pt), Spanish (es), and Russian (ru). Also added missing translations for Hindi (hi). - PRs: #16005, #15996, #16006, #15999, #16004, #16001, #16003, #15998, #16000, #15997, #16002, #15990, #15925.
For developers, the dotted path fix is essential for applications where user IDs, filenames, or other identifiers contain dots (e.g., email addresses). Without this fix, the frontend fallback might fail, returning incorrect responses. The documentation correction ensures the topic repository list in docs reflects the correct state. Additionally, the translation updates keep FastAPI's documentation accessible to a global audience, reducing language barriers.
Source: https://github.com/fastapi/fastapi/releases/tag/0.139.1