diff --git a/src/Illuminate/Foundation/helpers.php b/src/Illuminate/Foundation/helpers.php
index <HASH>..<HASH> 100644
--- a/src/Illuminate/Foundation/helpers.php
+++ b/src/Illuminate/Foundation/helpers.php
@@ -138,7 +138,7 @@ if (! function_exists('auth')) {
      * Get the available auth instance.
      *
      * @param  string|null  $guard
-     * @return \Illuminate\Contracts\Auth\Factory
+     * @return \Illuminate\Contracts\Auth\Factory|\Illuminate\Contracts\Auth\Guard|\Illuminate\Contracts\Auth\StatefulGuard
      */
     function auth($guard = null)
     {
add additional return types to auth() helper docblock (#<I>)