diff --git a/index.d.ts b/index.d.ts
index 0d1089c..209fab7 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -74,7 +74,7 @@ declare namespace Pusher {
   }
   interface HostOptions extends BaseOptions {
     host: string
-    port?: string
+    port?: number
   }
 
   export type Options = ClusterOptions | HostOptions