diff --git a/HttpBrowser.php b/HttpBrowser.php
index bf73f67..4f036e2 100644
--- a/HttpBrowser.php
+++ b/HttpBrowser.php
@@ -26,7 +26,7 @@
  */
 class HttpBrowser extends AbstractBrowser
 {
-    private HttpClientInterface $client;
+    private $client;
 
     public function __construct(HttpClientInterface $client = null, History $history = null, CookieJar $cookieJar = null)
     {