Drop support for Python 3.9 by @Viicos in [#13070](https://github.com/pydantic/pydantic/pull/13070)
Remove support for `eval_type_backport()` by @Viicos in [#13133](https://github.com/pydantic/pydantic/pull/13133)
v2.13.4
2026-05-06
No breaking-change keywords detected in release notes.
v2.13.3
2026-04-20
No breaking-change keywords detected in release notes.
v2.13.2
2026-04-20
No breaking-change keywords detected in release notes.
v2.13.1
2026-04-15
No breaking-change keywords detected in release notes.
v2.13.0
2026-04-13
No breaking-change keywords detected in release notes.
v2.13.0b3
2026-04-01
⚠ Potential breaking changes
No longer fall back to trying all union members when the variant selected by discriminator fails to serialize by @navalprakhar in [#12825](https://github.com/pydantic/pydantic/pull/12825)
v2.13.0b2
2026-02-24
No breaking-change keywords detected in release notes.