competitions_data_list_files only returning 20 files

I'm using this via the Python API to try get a list of all the files so i can just download a subset rather than the whole lot, but it's only returning 20. I've done the 'reinstall with force upgrade no deps' stuff, and am able to start a download of the full zipped dataset (in this casehttps://www.kaggle.com/c/siim-isic-melanoma-classification/data) but I'd like the API to return a full list for me to query.

Is there some pagination going on? I took a peek in kaggle_api.py and don't see any.