> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://buildwithfern.com/learn/llms.txt. ## 4.13.0 **`(feat):`** Adds support for overriding literal global headers in the client constructor (e.g. `version`). ```python client = Acme( ... version="1.0.0", ) ``` ## 4.12.1 **`(fix):`** Fixes an issue where dictionary types defined within TypedDicts incorrectly used the `typing_extensions.NotRequired` type. **`(fix):`** Fixes an issue where optional `core.File` parameters would cause `mypy` failures. **`(fix):`** Fixes a regression introduced in 4.12.0, where the non raw response client endpoints did not respect the allowed method keywords (e.g. `list` was generated as `list_`). ## 4.12.0 **`(fix):`** Resolve issues with paginated endpoints generating incorrect endpoint return types.