Installation dependency axlsx is not recognized

[JenniferMB]

I have axlsx-3.0.0.pre.gem installed yet I continue to receive missing dependency error while attempting to install activeadmin-axlsx-2.1.2.gem

ERROR: Could not find a valid gem 'axlsx' (<=0) in any repository

Unfortunately I cannot paste any sort of screen shot, I hope this is enough information.