# February 26, 2024

## 0.12.0

**`(feat):`** support deep object query parameter serialization. If, query parameters are
objects then Fern will support serializing them.

```yaml
MyFoo:
  properties:
    bar: optional<string>

query-parameters:
  foo: MyFoo
```

will now be serialized as `?foo[bar]="...` and appear in the SDK as a regular object

```ts
client.doThing({
  foo: {
    bar: "..."
  }
});
```