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title: APIkit Module 1.4.0 for Mule 4 Release Notes
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# APIkit Module 1.4.0 for Mule 4 Release Notes

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

**December 01, 2020**

## What’s New

OAS 3 support.

## Compatibility

- Mule Runtime 4.1.5 and later

- Anypoint Studio 7.2.0 and later

## Dependencies

- Anypoint API Console 6.2.6

## Fixed issues

- APIkit now allows sending type array headers as multiple values in one entry.

## See Also

- [Known Issues](https://help.salesforce.com/s/issues)