Charter Communications has announced gigabit broadband is available on the Hawaiian island of Oahu for $104.99/month, thanks to DOCSIS 3.1 upgrades being tested in the state.

Spectrum customers in Hawaii will also find their Standard tier internet speeds have also been doubled to 200Mbps, up from 100Mbps. A year ago, the company was selling 60Mbps broadband for the same $65 price it now charges for speeds more than triple as fast.

Charter has been at the rear of companies upgrading to DOCSIS 3.1 technology, primarily because the company is still upgrading legacy Time Warner Cable systems to free up space for boosting broadband speeds. The last analog television service in legacy Time Warner territory is not expected to disappear until 2019, with around half of former Time Warner Cable customers still waiting for upgrades. Charter executives don’t mind that the company is among the last, claiming that by the time DOCSIS 3.1 is fully deployed across their systems, equipment will be cheaper and more plentiful.

Charter plans to roll out DOCSIS 3.1 upgrades in selected cities — almost all facing substantial competition from Verizon FiOS, AT&T Fiber, or a municipal gigabit fiber provider — starting in 2018. But most markets will have to wait until 2019 or later before gigabit speeds become available from Spectrum.

Charter CEO Thomas Rutledge added Spectrum customers will see base plan speeds increase as the company continues its upgrade strategy.