The latest version for OnyX is 3.1.8, but Mac Informer says 3.1.7 is current.
I believe this is a delay in the update process, but sooner or later the app will be updated properly on Mac Informer as well.
However, you can also suggest an update through the Suggest a Correction on the application's page: http://macdownload.informer.com/onyx1/
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