diff --git a/package.json b/package.json
index 6de8139..75e2ff8 100755
--- a/package.json
+++ b/package.json
@@ -4,7 +4,8 @@
   "description": "",
   "main": "object.js",
   "scripts": {
-    "test": "node ./test.js"
+    "test": "node ./test.js",
+    "prepublishOnly": "npm test"
   },
   "repository": {
     "type": "git",