diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index baf0f161e0a235e..baa208e30f4eca8 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1 +1,6 @@
 All contributions are licensed under the terms of the LICENSE.md file.
+
+Documentation
+-------------
+
+See [web-platform-tests.org](https://web-platform-tests.org/).