Update ionic app to newer version

Hi, iam updating one of my apps from older ionic version to the latest. So i go with :
npm install -g ionic@latest
npm install @ionic/app-scripts@latest --save-dev
npm install ionic-angular@latest --save

what else do i have to update? What about ionic-native and all the plugins, do i have to update them all, and can i do it in 1 command?

The changelogs will help you.
https://github.com/ionic-team/ionic/blob/master/CHANGELOG.md
https://github.com/ionic-team/ionic-app-scripts/blob/master/CHANGELOG.md
https://github.com/ionic-team/ionic-cli/blob/master/CHANGELOG.md

hth
Tim