Who contributed to FastAPI & Pydantic on June 18, 2026?

1 developer shipped this update, including dependabot[bot].

What were the notable FastAPI & Pydantic updates?

Bump cryptography from 46.0.7 to 48.0.1, Bump aiohttp from 3.14.0 to 3.14.1, and 🔨 Update sponsors script to simplify previews (#15786).

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PYDANTIC UPGRADES CRYPTOGRAPHY AMID BREAKING CHANGES

By RepoJournal · Filed 06:04 UTC on June 18, 2026 · About FastAPI & Pydantic

1 person shipped this

dependabot[bot] @dependabot[bot] 2 cited

Pydantic is bumping cryptography to 48.0.1, a major version that ships backwards-incompatible changes and requires careful validation before you merge.

The Pydantic team is moving cryptography from 46.0.7 to 48.0.1 [1], a jump that includes breaking changes you need to audit before it lands in production. Version 48.0.0 introduced backwards-incompatible shifts [1], so this isn't a patch you can wave through. The upgrade also bumps aiohttp to 3.14.1 [2], a minor security and stability refresh that's lower risk. On the FastAPI side, the maintainers are cleaning house with sponsor script updates [3] and adding BairesDev to the sponsors list [4], keeping the ecosystem funded and documented. These are infrastructure plays, not code changes that affect your dependencies. The cryptography upgrade is the story here: it's necessary, it's significant, and it needs your attention before the PR merges.

Action items

→ Review cryptography 48.0.1 breaking changes and test with your auth/encryption code before approving pydantic/pydantic [immediate]
→ Monitor the aiohttp bump for integration issues in async workloads pydantic/pydantic [plan]
→ Watch FastAPI sponsor docs for changes to preview rendering fastapi/fastapi [monitor]

References

[1] Bump cryptography from 46.0.7 to 48.0.1 ↗ pydantic/pydantic
[2] Bump aiohttp from 3.14.0 to 3.14.1 ↗ pydantic/pydantic
[3] 🔨 Update sponsors script to simplify previews (#15786) fastapi/fastapi
[4] 🔧 Update sponsors: add BairesDev (#15787) fastapi/fastapi

Quick answers

What shipped in FastAPI & Pydantic on June 18, 2026?: Pydantic is bumping cryptography to 48.0.1, a major version that ships backwards-incompatible changes and requires careful validation before you merge. In total, 2 commits and 4 pull requests landed.
Who contributed to FastAPI & Pydantic on June 18, 2026?: 1 developer shipped this update, including dependabot[bot].
What were the notable FastAPI & Pydantic updates?: Bump cryptography from 46.0.7 to 48.0.1, Bump aiohttp from 3.14.0 to 3.14.1, and 🔨 Update sponsors script to simplify previews (#15786).

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