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wire 2026-08-26
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CI CACHE GOES DARK ACROSS FASTAPI AND SQLMODEL

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

YuriiMotov lakshay-gahlawat Viicos latest-changes[bot]
4 people shipped this
YuriiMotov @YuriiMotov 2 cited lakshay-gahlawat @lakshay-gahlawat 1 cited Viicos @Viicos 1 cited latest-changes[bot] @latest-changes[bot]

A routine bump to setup-uv just disabled CI caching by default for three event types in both FastAPI and SQLModel.

YuriiMotov bumped `setup-uv` to `10.0.1` across both fastapi/fastapi [1] and tiangolo/sqlmodel [2], inheriting a security-driven breaking change from v10.0.0 that disables caching for workflows triggered by `workflow_run`, `pull_request_target`, and `release`. The release notes say v10.0.0 "disables cache by default" [1], so if your CI depends on those triggers, expect slower jobs until you opt back in. The teams are intentionally keeping the new behavior for now. Meanwhile, pydantic cleaned up its agent skill docs [3] and clarified the note about plain model serializers returning a non-dict [4], closing issue #13701. Nothing else moved across the stack, so the real signal is the CI cache shift: verify your FastAPI and SQLModel pipelines before your next release-triggered build.

$ 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 August 26, 2026?
A routine bump to setup-uv just disabled CI caching by default for three event types in both FastAPI and SQLModel. In total, 6 commits and 4 pull requests landed.
Who contributed to FastAPI & Pydantic on August 26, 2026?
4 developers shipped this update, including YuriiMotov, latest-changes[bot], lakshay-gahlawat, and Viicos.
What were the notable FastAPI & Pydantic updates?
⬆️ Bump `setup-uv` action to `10.0.1`, ⬆️ Bump `setup-uv` action to `10.0.1`, and Fix typos, phrasing, and missing imports in SKILL.md.
♥

$ 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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