diff --git a/src/Readability.php b/src/Readability.php
index b0a4a12..30cbade 100644
--- a/src/Readability.php
+++ b/src/Readability.php
@@ -113,7 +113,7 @@ class Readability implements LoggerAwareInterface
     ];
 
     /**
-     * @var array<string, bool|string>
+     * @var array<string, bool|int|string>
      */
     public $tidy_config = [
         'tidy-mark' => false,