- Added documentation updates, including installing python-multipart for forms, truncating docstrings for path operations, and Swagger UI initOAuth settings, plus typo fixes.
- Generated OpenAPI schemas in alphabetical order and corrected handling of 4XX responses that were overriding default 422 validation errors.
- Fixed HTML DOCTYPE issues in generated Swagger UI and ReDoc pages.
0.40.0
Official FastAPI changelog summary with source attribution, release tags, and community reactions.
Track this FastAPI release note alongside related changelog updates, risky changes, and weekly digest signals from the developer community.
Verify the original release note
Every summary should remain traceable to the original changelog or release source.
Follow this in context
Turn this FastAPI release note into a weekly digest for the tools you actually use.
Create digest