diff --git a/package.json b/package.json
index 1c356d8..e700a45 100644
--- a/package.json
+++ b/package.json
@@ -28,6 +28,7 @@
   "engines": [
     "node"
   ],
+  "license": "Apache-2.0",
   "testling": {
     "files": "test.js",
     "browsers": [