diff --git a/signalr/signalr.d.ts b/signalr/signalr.d.ts
index aa17d1e579..e890c8f425 100644
--- a/signalr/signalr.d.ts
+++ b/signalr/signalr.d.ts
@@ -90,6 +90,7 @@ interface HubConnectionSettings {
 interface HubConnection extends SignalR {
     //(url?: string, queryString?: any, logging?: boolean): HubConnection;
     proxies: any;
+    transport: { name: string, supportsKeepAlive: () => boolean };
     received(callback: (data: { Id: any; Method: any; Hub: any; State: any; Args: any; }) => void ): HubConnection;
     createHubProxy(hubName: string): HubProxy;
 }