diff --git a/types/material__drawer/constants.d.ts b/types/material__drawer/constants.d.ts
index 0f1bcc370a..f9f13946c9 100644
--- a/types/material__drawer/constants.d.ts
+++ b/types/material__drawer/constants.d.ts
@@ -1,3 +1,9 @@
+// Type definitions for Material Components Web 0.43
+// Project: https://material.io/components/
+// Definitions by: Arthur Groupp <https://github.com/agroupp>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.6
+
 /**
  * Copyright 2016 Google Inc. All Rights Reserved.
  *