Pydantic Release Notes

v2.14.0a1 (2026-05-22)

What's Changed

Packaging

Add PyEmscripten platform tag support by @Viicos, @greateggsgreg and @sinaatalay in #13199:

pydantic-core now has a 3.14 wheel published with the pyemscripten_2026_0 platform tag.

Note that this wheel can only be used with Pyodide 314.0 and greater, still in development.

It is recommended to wait for the final 314.0 release (and for Pydantic to publish a new wheel in a future 2.14 release).

Changes

Accept None in MultiHostUrl.build()'s hosts parameter by @Viicos in #13068

Drop support for Python 3.9 by @Viicos in #13070

Remove support for eval_type_backport() by @Viicos in #13133

Only deepcopy non-updated fields in model_copy() by @connorcarpenter15 in #13087

Fixes

Add Mypy plugin workaround for dynamic models defined in functions by @ilevkivskyi in #13177

Fallback to create_model() overload definition when base is set to a type variable in the Mypy plugin by @cyphercodes in #13146

New Contributors

@ilevkivskyi made their first contribution in #13177

@cyphercodes made their first contribution in #13146

@connorcarpenter15 made their first contribution in #13087

Full Changelog: v2.13.4...v2.14.0a1