In a computer-implemented method for managing hosts of a pre-configured hyper-converged computing device, a pre-configured hyper-converged computing device comprising a plurality of hosts is managed, where the plurality of hosts is allocable to workload domains, where unallocated hosts of the plurality of hosts is maintained within a pool of unallocated hosts, and where the plurality of hosts each have an operating system version. An unallocated host of the pool of unallocated hosts is determined as having an operating system version that is outside of a range of supported operating system versions. The operating system version of the unallocated host is updated to an operating system version within the range of supported operating system versions.