Transfer/share package ownership?

How does one go about either transferring the ownership of a hex package or adding members to it? I have offered to contribute to developing the GitHub - onkel-dirtus/logger_file_backend package; the original author has granted me write privileges to the Github repo, but I’m unable to publish updates to Hex. What’s the best way to proceed? Does the original package author need to edit Hex settings?

Thanks in advance!

The current Hex package owner can use the mix hex.owner task to either add you as another owner or transfer the package to you.