From the command line:
  • wget http://repo.phphelium.com/keys/helium.gpg.key http://repo.phphelium.com/apt/debian/helium.list
  • apt-key add helium.gpg.key
  • mv helium.list /etc/apt/sources.list.d/
  • apt-get install helium


Or you can download the current version:

Older Versions: