> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://buildwithfern.com/learn/llms.txt. ## 4.0.0-rc2 **`(fix):`** Update .dict calls in Pydantic V2 to be back to pre-3.10.4 logic for SDKs that continue using Pydantic aliases. ## 4.0.0-rc1 **`(fix):`** Update .dict calls in Pydantic V2 to be back to pre-3.10.4 logic. ### What's been fixed * Pydantic V2 `.dict` calls are updated to be back to pre-3.10.4 logic. This is fix a regression where nested literals were being omitted due to the Pydantic V2 serializers not respecting the recursive .dict logic, as Pydantic V2 shells out `model_dump` calls to Rust library and serializers, as opposed to recursively calling `model_dump`. It is expected that performance will not be degraded given the Rust-based serializers have optimized performance, compared to the Pydantic V1 .dict approach.