diff --git a/src/BigBlueButton.php b/src/BigBlueButton.php
index 039098dc..1eb5d5f5 100644
--- a/src/BigBlueButton.php
+++ b/src/BigBlueButton.php
@@ -84,7 +84,7 @@ class BigBlueButton
     protected int $timeOut    = 10;
     protected string $jSessionId;
 
-    private UrlBuilder $urlBuilder;
+    protected UrlBuilder $urlBuilder;
 
     /**
      * @param null|array<string, mixed> $opts