diff --git a/main.go b/main.go
index e40da03..03c6023 100644
--- a/main.go
+++ b/main.go
@@ -130,7 +130,7 @@ func main() {
   router.HandleFunc("PATCH /todos/{id}/undone", todoHandler.Undone)
 
   server := http.Server{
-    Addr: "localhost:3000",
+    Addr: ":3000",
     Handler: middleware.LoggingMiddleware(router),
   }