To update your Participant Agreement, for example to change the workstreams you participate in or change your contact information, submit a pull request to the whatwg/participant-data GitHub repository.
The pull request must be from the GitHub account of the individual who submitted the agreement in the first place, or from the GitHub account of the primary or secondary contact in the case of an entity.
If you are an individual and need to update your private data (address or email), email the Steering Group: [email protected].