file -i test.xlsx returns application/octet-stream instead of real mime type

$ file -i import_test.xlsx
import_test.xlsx: application/octet-stream; charset=binary

The mime type should be "application/zip" but the command returns "application/octet-stream". This is working in Ubuntu 14.04. Though, I can't remember if I have installed some additional packages to get it working.

Is there some packages that need to be installed in order to get the mime types recognized for office files?

I have already the latest libfile-mimeinfo-perl.

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