can't push ember cli app to heroku due to broccoli-sass and node-sass

I've been trying to deploy to Heroku and it keeps throwing me an error. Apparently node 0.12 was not compatible with node-sass so I updated to node-sass 2.0.1 but it still doesn't work. I'm using ember cli 0.1.15

Module did not self-register.
       Error: Module did not self-register.
           at Error (native)
           at Module.load (module.js:355:32)
           at Function.Module._load (module.js:310:12)
           at Module.require (module.js:365:17)
           at require (module.js:384:17)
           at Object.<anonymous> (/tmp/build_9fa8a1b16bb172aacd5dffe37fe967c1/node_modules/broccoli-sass/node_modules/node-sass/lib/index.js:181:15)
           at Module._compile (module.js:460:26)
           at Object.Module._extensions..js (module.js:478:10)
           at Module.load (module.js:355:32)
           at Function.Module._load (module.js:310:12)

 !     Push rejected, failed to compile Ember CLI app