diff --git a/phpstan.neon b/phpstan.neon
index e94f403..12467c4 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -11,5 +11,5 @@ parameters:
   paths:
       - ./src/
   ignoreErrors:
-    - message: '#^Parameter \#1 \$value of method\.#'
+    - message: '#^Action callback returns bool but should not return anything\.$#'
       path: ./src/TransientCleaner.php
diff --git a/src/TransientCleaner.php b/src/TransientCleaner.php
index 1ddbf76..04f0d91 100644
--- a/src/TransientCleaner.php
+++ b/src/TransientCleaner.php
@@ -198,10 +198,11 @@ public function set_stored_transients($value) : TransientCleaner
      *
      * @param array|bool $value     New value.
      * @param array|bool $old_value Old value.
+     * @param string     $option    Option name.
      *
      * @return array|bool           New value
      */
-    public function merge_stored_transients_option_values($value, $old_value)
+    public function merge_stored_transients_option_values($value, $old_value, $option)
     {
         // Return `$value` if no previous value.
         if (false === $old_value) {