> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://buildwithfern.com/learn/llms.txt.

## 0.50.3

**`(internal):`** Fixes an issue where optional, nullable properties resulted in a double optional in the
IRv55 -> IRv54 migration.

## 0.50.2

**`(fix):`** The docs now includes alpha support for parsing openrpc specs. To leverage this feature,
simply define an API section in your docs.yml and point at an openrpc spec.

**`docs.yml`**

```yml docs.yml
navigation:
  - api: API Reference
    openrpc: `<path to openrpc file>`
```

## 0.50.1

**`(fix):`** Fixes an issue where nullable schemas were not coerced into optional values.

**`(fix):`** Fixes an issue where `fern check` would fail for optional, nullable properties.

## 0.50.0

**`(internal):`** The CLI is capable of migrating the latest TypeScript generator to IRv55.

## 0.49.1

**`(fix):`** The OpenAPI v2 parser now supports `x-fern-global-headers` and fixes an issue with generating webhook content.