diff --git a/index.d.ts b/index.d.ts
index 3f81dc3b1..b8643efa7 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -136,6 +136,7 @@ declare namespace Peer {
     port?: number;
     path?: string;
     secure?: boolean;
+    token?: string;
     config?: RTCConfiguration;
     debug?: number;
   }