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wire 2026-05-25
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$ the-wire · showcase

PYDANTIC 2.13.4 AND SETTINGS 2.14.1 LAND IN FASTAPI DEPENDENCY SWEEP

By RepoJournal · Filed · About FastAPI & Pydantic · Composed from the cited sources · methodology

dependabot[bot] TheArchons YuriiMotov
3 people shipped this
dependabot[bot] @dependabot[bot] 1 cited TheArchons @TheArchons 1 cited YuriiMotov @YuriiMotov 1 cited

FastAPI bumped 15 packages overnight, including critical updates to Pydantic and its settings library that you'll want in your next deployment.

The headline story is a coordinated dependency upgrade [1] that moves Pydantic from 2.13.3 to 2.13.4 and pydantic-settings from 2.12.0 to 2.14.1, landing alongside tooling improvements across the stack. Ruff jumped from 0.15.8 to 0.15.13 and mypy crossed a major version boundary to 2.1.0 [1], which means stricter type checking is coming to your lint pipeline. The FastAPI team also tightened up documentation consistency by pushing all inline code examples toward Annotated syntax [2], making the tutorial match the framework's current best practices. On the ops side, Dependabot is now configured to group updates and run weekly [3], which should reduce PR noise while keeping your stack fresher. Documentation got a housekeeping pass too, with NGINX Unit removed from the ASGI server recommendations [4] to reflect current deployment reality.

$ ls fastapi/reviews/ # the step-back reads

the week in review Pydantic drops Python 3.10, then layers serialization fast paths the month in review Five Pydantic validation bypasses and a quadratic URL check
Full archive → Weekly reviews →

Quick answers

What shipped in FastAPI & Pydantic on May 25, 2026?
FastAPI bumped 15 packages overnight, including critical updates to Pydantic and its settings library that you'll want in your next deployment. In total, 4 commits and 5 pull requests landed.
Who contributed to FastAPI & Pydantic on May 25, 2026?
3 developers shipped this update, including dependabot[bot], TheArchons, and YuriiMotov.
What were the notable FastAPI & Pydantic updates?
⬆ Bump the python-packages group with 15 updates, ✏️ Use `Annotated` in inline example in `docs/en/docs/tutorial/body-multiple-params.md`, and 👷 Configure Dependabot to group updates and update weekly.
♥

$ log FastAPI & Pydantic --recent

Pydantic fixes GC tracking in pydantic-core and caches UTC TzInfo 50 shipped Pydantic drops Python 3.10, accepts list and DecimalTuple for Decimal 37 shipped Pydantic reworks `TypeAdapter` call arguments, tightens `Decimal` schemas 13 shipped FastAPI bumps pillow and dnspython, Pydantic corrects arguments JSON Schema 6 shipped

$ log --all # elsewhere on the wire

Agent Security Quiet day in agent security as guard coverage reaches four clients Alignment & Post-training verl defaults Ascend RL mode, open-instruct unblocks SFT packing

$ ls showcases/

Safety Evals AI Red Teaming Agent Security Interpretability Alignment & Post-training

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