diff --git a/package.json b/package.json
index 09d39d0..74b95a1 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
     "start": "budo src/index.js --serve=bundle.js --live",
     "release": "standard-version",
     "test": "npm run test-unit && eslint src && npm run prerender -- /dev/null && rm -rf lib",
-    "test-unit": "mocha --compilers js:babel-register test",
+    "test-unit": "mocha --require babel-register test",
     "prerender": "babel src --out-dir lib && node lib/render.js",
     "build": "npm run gen-index && cross-env NODE_ENV=production browserify src/index.js | uglifyjs -c -m > bundle.js && npm run prerender -- index.html"
   },