Will the humble version of halcyon 6 work on steam for linux?

Halcyon 6 in the Humble Store says the following:

Halcyon 6: Starbase Commander is provided via Steam key for Windows and Mac.

However, Halcyon 6 in the Steam store claims it supports linux.

If I buy a key through the Humble Store and activate it on Steam, will I be able to play it on Linux?

I assume there is just one kind of key, and as long as the Steam version supports Linux I should be fine, but the discrepancy makes me unsure.