diff --git a/src/AuthenticationService.php b/src/AuthenticationService.php
index <HASH>..<HASH> 100644
--- a/src/AuthenticationService.php
+++ b/src/AuthenticationService.php
@@ -123,7 +123,7 @@ class AuthenticationService implements AuthenticationServiceInterface
     /**
      * Access the authenticator collection
      *
-     * @return \Authentication\Authenticator\AuthenticatorCollection
+     * @return \Authentication\Authenticator\AuthenticatorCollection|\Authentication\Authenticator\AuthenticatorInterface[]
      */
     public function authenticators()
     {
Add missing typehint for collection.