One of the greatest features of Reactium is the ability to update to the latest version with minimal worrying about your current project being disrupted.
Updating is usually non-invasive, but It's always a good idea to commit your current project before updating.
$ arcli reactium update
After updating, ensure that you have the updated dependencies by running:
$ npm install
Under the hood, the latest version of Reactium Core is pulled down, extracted, and an update script makes necessary edits to your config files.