I updated Django project with this config: **Django version 2.2 django-rest-framework version 3.9.4 django-rest-framework-json-api version 2.8.0** In the base.py file, JSON_API_FORMAT_FIELD_NAMES = "camelize" and the result is: Formatted JSON Data ``` { "data":{ "type":"...", "id":"...", "attributes":{ "title":"...", "slug":"...", "components":[ { "type":"...", "id":"...", "component_style":"..." } ] } } } ``` The **component_style** is not camelized... With django-rest-framework-json-api version 2.4.0** this worked.