Clojure applications now use Leiningen 2.7.1
Change effective on 31 July 2017
Heroku’s support for Clojure applications now uses Leiningen 2.7.1. You can customize the version of Leiningen by adding a lein
script to the bin/
directory in your app’s repo. For more information, see the Heroku Dev Center documentation for Clojure.