diff --git a/src/WpHandler.php b/src/WpHandler.php
index 727193f..9d19522 100644
--- a/src/WpHandler.php
+++ b/src/WpHandler.php
@@ -7,6 +7,7 @@
 use Psr\Http\Message\RequestInterface;
 use Psr\Http\Message\ResponseInterface;
 use RebelCode\Psr7\Response;
+use WP_Error;
 
 use function wp_remote_request;
 
@@ -60,6 +61,7 @@ public function handle(RequestInterface $request): ResponseInterface
         $args = $this->prepareArgs($request);
         $httpVer = $request->getProtocolVersion();
 
+        /** @var WP_Error|array $responseData */
         $responseData = wp_remote_request($uri, $args);
 
         $code = wp_remote_retrieve_response_code($responseData);