# July 12, 2025

## 0.65.11

**`(feat):`** The extension `x-fern-global-headers` now supports a type field that can point to
arbitrary schemas. For example you can do the following to describe a header
that is an enum.

```yml
x-fern-global-headers:
  - header: X-API-Version
    name: version
    type: VersionEnum
```

## 0.65.10

**`(feat):`** Clarify `fern upgrade` command description.