Find out what's new with Heroku on our blog.
Change effective on 01 October 2013
Heroku now supports Node.js v0.10.20, which fixes some issues in last week’s 0.10.19 release. You can specify a version in the engines.node field of your app’s package.json file, e.g. 0.10.x.
0.10.19
engines.node
0.10.x