v2.12.1 2025-10-13

v2.12.1 (2025-10-13)

This is the first 2.12 patch release, addressing most (but not all yet) regressions from the initial 2.12.0 release.

Do not evaluate annotations when inspecting validators and serializers by @Viicos in #12355
Make sure None is converted as NoneType in Python 3.14 by @Viicos in #12370
Backport V1 runtime warning when using Python 3.14 by @Viicos in #12367
Fix error message for invalid validator signatures by @Viicos in #12366
Populate field name in ValidationInfo for validation of default value by @Viicos in pydantic-core#1826
Encode credentials in MultiHostUrl builder by @willswire in pydantic-core#1829
Respect field serializers when using serialize_as_any serialization flag by @davidhewitt in pydantic-core#1829
Fix various RootModel serialization issues by @davidhewitt in pydantic-core#1836

Full Changelog: https://github.com/pydantic/pydantic/compare/v2.12.0...v2.12.1

This is the first 2.12 patch release, addressing most (but not all yet) regressions from the initial 2.12.0 release.

Do not evaluate annotations when inspecting validators and serializers by @Viicos in #12355
Make sure None is converted as NoneType in Python 3.14 by @Viicos in #12370
Backport V1 runtime warning when using Python 3.14 by @Viicos in #12367
Fix error message for invalid validator signatures by @Viicos in #12366
Populate field name in ValidationInfo for validation of default value by @Viicos in pydantic-core#1826
Encode credentials in MultiHostUrl builder by @willswire in pydantic-core#1829
Respect field serializers when using serialize_as_any serialization flag by @davidhewitt in pydantic-core#1829
Fix various RootModel serialization issues by @davidhewitt in pydantic-core#1836

Full Changelog: https://github.com/pydantic/pydantic/compare/v2.12.0...v2.12.1