Install latest nodejs version in ubuntu 14.04

This is the way I installed [nodejs][1] in ubuntu 14.04 LTS: sudo add-apt-repository ppa:chris-lea/node.js sudo apt-get install nodejs When I checked the node version with this: node -v I get this v0.10.37 But the latest version is 4.2.6 and 5.5.0. How can I get the latest or update version? [1]: https://nodejs.org/en/