FastAPI / update detail

0.160.0

Official FastAPI changelog summary with source attribution, release tags and upgrade verdicts.

Track this FastAPI release note alongside related changelog updates, risky changes, and weekly digest signals from the developer community.

FastAPI·Oct 22, 2026, 04:54 PMChangeMay break your integrationAI-assisted summary

Summary

Parameter models now enforce their extra configuration (forbid/allow/ignore) on all fields in the same request location, including fields from other models, individual parameters, and dependencies
This aligns FastAPI with Pydantic behavior and may cause previously accepted fields to be rejected when extra="forbid"
Internal update: bump certifi from 2026.1.4 to 2026.10.19

breakingminorsource healthy

Official source Last checked Oct 27, 2026, 5:00 PM

Loading follow options…

keep exploring

Continue with FastAPI

Compare this release with the product timeline and keep the tools you use in one place.

official source

Every summary should remain traceable to the original changelog or release source.

AI-assisted summarysource healthyLast checked Oct 27, 2026, 5:00 PM

digest settings

Already following FastAPI? Add related tools without starting a new digest.