diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 0a5b53a125ca8..73049a495e1f7 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -7,3 +7,6 @@
   issues](https://github.com/npm/npm/search?q=Similar%20issues&type=Issues).
 * Ensure your new issue conforms to the [Contributing
   Guidelines](https://github.com/npm/npm/wiki/Contributing-Guidelines).
+
+Participation in this open source project is subject to the [npm Code
+of Conduct](http://www.npmjs.com/policies/conduct).