Who contributed to FastAPI & Pydantic on August 1, 2026?

2 developers shipped this update, including Viicos and Samarth D N.

What were the notable FastAPI & Pydantic updates?

Fix population of `SerializationInfo.exclude_computed_fields` (#13560), Fix population of `SerializationInfo.exclude_computed_fields`, and Correct typo in test comments.

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PYDANTIC FIXES SERIALIZATION INFO EXCLUSION BUG

By RepoJournal · Filed 07:00 UTC on August 1, 2026 · About FastAPI & Pydantic

2 people shipped this

Viicos @Viicos 2 cited

Samarth D N @TheGreatApollyon 1 cited

Pydantic patched a critical gap in SerializationInfo.exclude_computed_fields population that was silently breaking field exclusion logic in serialization workflows.

Viicos merged a fix that restores proper population of SerializationInfo.exclude_computed_fields [1], addressing a regression where computed fields weren't being excluded as intended during serialization. The patch [2] targets the exact mechanism that controls field filtering, ensuring downstream code that depends on exclusion metadata gets the correct state. This landed alongside cleanup work, including a typo correction across test files [3] that improves test maintainability. The fix is narrow and focused, which means it's safe to pull into your next release without audit overhead.

Action items

→ Pin pydantic to the latest commit with SerializationInfo fix before shipping any serialization-heavy code pydantic/pydantic [plan]
→ Review your serialization pipelines to verify exclude_computed_fields is working as expected pydantic/pydantic [monitor]

References

[1] Fix population of `SerializationInfo.exclude_computed_fields` (#13560) pydantic/pydantic
[2] Fix population of `SerializationInfo.exclude_computed_fields` ↗ pydantic/pydantic
[3] Correct typo in test comments ↗ pydantic/pydantic

Quick answers

What shipped in FastAPI & Pydantic on August 1, 2026?: Pydantic patched a critical gap in SerializationInfo.exclude_computed_fields population that was silently breaking field exclusion logic in serialization workflows. In total, 2 commits and 2 pull requests landed.
Who contributed to FastAPI & Pydantic on August 1, 2026?: 2 developers shipped this update, including Viicos and Samarth D N.
What were the notable FastAPI & Pydantic updates?: Fix population of `SerializationInfo.exclude_computed_fields` (#13560), Fix population of `SerializationInfo.exclude_computed_fields`, and Correct typo in test comments.

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