diff --git a/package.json b/package.json
index e5c95e60..3b7f50c4 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "watch": "parcel watch js/index.js -d static/assets --public-url /static/assets -o index.js --no-autoinstall",
     "build": "parcel build js/index.js -d static/assets --public-url /static/assets -o index.js",
     "test": "jest",
-    "test:coverage": "jest --coverage",
+    "test:coverage": "jest --coverage --collectCoverageFrom='js/**/*.js'",
     "test:watch": "jest --watch --no-cache"
   },
   "author": "",