diff --git a/polymer-ts/polymer-ts.d.ts b/polymer-ts/polymer-ts.d.ts
index c00c0ce1a0..921b256656 100644
--- a/polymer-ts/polymer-ts.d.ts
+++ b/polymer-ts/polymer-ts.d.ts
@@ -1,3 +1,8 @@
+// Type definitions for PolymerTS 0.1.19
+// Project: https://github.com/nippur72/PolymerTS
+// Definitions by: Louis Grignon <https://github.com/lgrignon/>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
 declare module polymer {
     class PolymerBase extends HTMLElement {
         $: any;