diff --git a/package.json b/package.json
index 09a7157a4..fb35221af 100644
--- a/package.json
+++ b/package.json
@@ -80,6 +80,7 @@
     "surge": "npm run compile && surge --domain scientific-wish.surge.sh -p ./ && rm -rf dist/",
     "test": "mocha-webpack --webpack-config source/webpack.test.config.js --require source-map-support/register --require test/helpers/browser.js \"test/**/*.test.js\"",
     "test-watch": "mocha-webpack --webpack-config source/webpack.test.config.js --require source-map-support/register --require test/helpers/browser.js \"test/**/*.test.js\" --watch",
-    "test-meca": "mocha-webpack --webpack-config source/webpack.test.config.js --require source-map-support/register --require test/helpers/browser.js test/mecanisms.test.js"
+    "test-meca": "mocha-webpack --webpack-config source/webpack.test.config.js --require source-map-support/register --require test/helpers/browser.js test/mecanisms.test.js",
+    "heroku-postbuild": "webpack -p --config source/webpack.config.js --progress"
   }
 }