diff --git a/src/Uri.php b/src/Uri.php
index 7269841..6f51d7f 100644
--- a/src/Uri.php
+++ b/src/Uri.php
@@ -292,7 +292,7 @@ protected function hasStandardPort(): bool
     /**
      * Filter Uri port.
      *
-     * @param  int|null $port The Uri port number.
+     * @param  int|string|null $port The Uri port number.
      *
      * @return int|null
      *