diff --git a/src/Security/Http/Authentication/AuthenticationSuccessHandler.php b/src/Security/Http/Authentication/AuthenticationSuccessHandler.php
index cf55767..ffcc8ce 100644
--- a/src/Security/Http/Authentication/AuthenticationSuccessHandler.php
+++ b/src/Security/Http/Authentication/AuthenticationSuccessHandler.php
@@ -58,7 +58,7 @@ public function onAuthenticationSuccess(Request $request, TokenInterface $token)
     /**
      * Add fields to the response payload.
      */
-    public function addResponsePayload(string $key, string $value): void
+    public function addResponsePayload(string $key, $value): void
     {
         $this->responsePayload[$key] = $value;
     }