diff --git a/package.json b/package.json
index 6e952c5..564e09f 100644
--- a/package.json
+++ b/package.json
@@ -15,5 +15,6 @@
   "repository": {
     "type": "git",
     "url": "https://github.com/component/indexof.git"
-  }
+  },
+  "license": "MIT"
 }