How to add more options to the 'Restrict allowed file types' settings?
You can now set allowedFileExtensions and extraAllowedFileExtensions in your config file. The first will re-define the list of allowed files, where the latter will allow you to add additional file types.

For example, I needed to add 3 additional formats:

'extraAllowedFileExtensions' =&gt; 'bim, dwg, rvt'


See the documentation here for details.