What's Changed

• Add user warning when using Python 3.14 by @Viicos in #12263
  Pydantic V1 will not work with Python 3.14 and greater. A warning is now raised as no actual
  error show up when using it, but the core behavior will silently get broken at runtime.
• Fix mypy plugin issue for mypy v1.18 by @cdce8p in #12254
  This fixes another mypy issue that was discovered after the previous v1.10.23 release.

Full Changelog: v1.10.23...v1.10.24

What's Changed

Fixes

• Backport v1.10.23 changes by @Viicos

Full Changelog: v2.11.8...v2.11.9

v2.11.8 (2025-09-13)

What's Changed

Fixes

• Fix mypy plugin for mypy 1.18 by @cdce8p in #12209

Full Changelog: v2.11.7...v2.11.8

v1.10.23 (2025-09-13)

• Fix mypy plugin for mypy 1.18 by @cdce8p in #12207

Full Changelog: v1.10.22...v1.10.23

v2.12.0a1 (2025-07-26)

This is the first alpha release of the upcoming 2.12 release, which adds initial support for Python 3.14.

What's Changed

New Features

• Add __pydantic_on_complete__() hook that is called once model is fully ready to be used by @DouweM in #11762
• Add initial support for Python 3.14 by @Viicos in #11991
• Add regex patterns to JSON schema for Decimal type by @Dima-Bulavenko in #11987
• Add support for doc attribute on dataclass fields by @Viicos in #12077
• Add experimental MISSING sentinel by @Viicos in #11883

Changes

• Allow config and bases to be specified together in create_model() by @Viicos in #11714
• Move some field logic out of the GenerateSchema class by @Viicos in #11733
• Always make use of inspect.getsourcelines() for docstring extraction on Python 3.13 and greater by @Viicos in #11829
• Only support the latest Mypy version by @Viicos in #11832
• Do not implicitly convert after model validators to class methods by @Viicos in #11957
• Refactor FieldInfo creation implementation by @Viicos in #11898
• Make Secret covariant by @bluenote10 in #12008
• Emit warning when field-specific metadata is used in invalid contexts by @Viicos in #12028

Fixes

• Properly fetch plain serializer function when serializing default value in JSON Schema by @Viicos in #11721
• Remove generics cache workaround by @Viicos in #11755
• Remove coercion of decimal constraints by @Viicos in #11772
• Fix crash when expanding root type in the mypy plugin by @Viicos in #11735
• Only mark model as complete once all fields are complete by @DouweM in #11759
• Do not provide field_name in validator core schemas by @DouweM in #11761
• Fix issue with recursive generic models by @Viicos in #11775
• Fix qualified name comparison of private attributes during namespace inspection by @karta9821 in #11803
• Make sure Pydantic dataclasses with slots and validate_assignment can be unpickled by @Viicos in #11769
• Traverse function-before schemas during schema gathering by @Viicos in #11801
• Fix check for stdlib dataclasses by @Viicos in #11822
• Check if FieldInfo is complete after applying type variable map by @Viicos in #11855
• Do not delete mock validator/serializer in model_rebuild() by @Viicos in #11890
• Rebuild dataclass fields before schema generation by @Viicos in #11949
• Always store the original field assignment on FieldInfo by @Viicos in #11946
• Do not use deprecated methods as default field values by @Viicos in #11914
• Allow callable discriminator to be applied on PEP 695 type aliases by @Viicos in #11941
• Suppress core schema generation warning when using SkipValidation by @ygsh0816 in #12002
• Do not emit typechecking error for invalid Field() default with validate_default set to True by @Viicos in #11988
• Refactor logic to support Pydantic's Field() function in dataclasses by @Viicos in #12051

Packaging

• Update project metadata to use PEP 639 by @Viicos in #11694
• Bump mkdocs-llmstxt to v0.2.0 by @Viicos in #11725
• Bump pydantic-core to v2.35.1 by @Viicos in #11963
• Bump dawidd6/action-download-artifact from 10 to 11 by @dependabot[bot] in #12033
• Bump astral-sh/setup-uv from 5 to 6 by @dependabot[bot] in #11826
• Update mypy to 1.17.0 by @Viicos in #12076

New Contributors

• @parth-paradkar made their first contribution in #11695
• @dqkqd made their first contribution in #11739
• @fhightower made their first contribution in #11722
• @gbaian10 made their first contribution in #11766
• @DouweM made their first contribution in #11759
• @bowenliang123 made their first contribution in #11719
• @rawwar made their first contribution in #11799
• @karta9821 made their first contribution in #11803
• @jinnovation made their first contribution in #11834
• @zmievsa made their first contribution in #11861
• @Otto-AA made their first contribution in #11860
• @ygsh0816 made their first contribution in #12002
• @lukland made their first contribution in #12015
• @Dima-Bulavenko made their first contribution in #11987
• @GSemikozov made their first contribution in #12050
• @hannah-heywa made their first contribution in #12082

What's Changed

Fixes

• Copy FieldInfo instance if necessary during FieldInfo build by @Viicos in #11980

Full Changelog: v2.11.6...v2.11.7

v2.11.6 (2025-06-13)

What's Changed

Fixes

• Rebuild dataclass fields before schema generation by @Viicos in #11949
• Always store the original field assignment on FieldInfo by @Viicos in #11946

Full Changelog: v2.11.5...v2.11.6

What's Changed

Fixes

• Check if FieldInfo is complete after applying type variable map by @Viicos in #11855
• Do not delete mock validator/serializer in model_rebuild() by @Viicos in #11890
• Do not duplicate metadata on model rebuild by @Viicos in #11902

Full Changelog: v2.11.4...v2.11.5

What's Changed

Packaging

• Bump mkdocs-llmstxt to v0.2.0 by @Viicos in #11725

Changes

• Allow config and bases to be specified together in create_model() by @Viicos in #11714.
  This change was backported as it was previously possible (although not meant to be supported)
  to provide model_config as a field, which would make it possible to provide both configuration
  and bases.

Fixes

• Remove generics cache workaround by @Viicos in #11755
• Remove coercion of decimal constraints by @Viicos in #11772
• Fix crash when expanding root type in the mypy plugin by @Viicos in #11735
• Fix issue with recursive generic models by @Viicos in #11775
• Traverse function-before schemas during schema gathering by @Viicos in #11801

What's Changed

Packaging

• Update V1 copy to v1.10.21 by @Viicos in #11706

Fixes

• Preserve field description when rebuilding model fields by @Viicos in #11698

Full Changelog: v2.11.2...v2.11.3