diff --git a/package.json b/package.json
index 0a9ebfe61e..cfb004a1e9 100644
--- a/package.json
+++ b/package.json
@@ -159,6 +159,7 @@
   "files": [
     "dist/{css,js}/*.{css,js,map}",
     "js/{src,dist}/**/*.{js,map}",
+    "!js/src/**/*.spec.js",
     "scss/**/*.scss"
   ],
   "jspm": {