diff --git a/application/tests/Bootstrap.php b/application/tests/Bootstrap.php
index <HASH>..<HASH> 100644
--- a/application/tests/Bootstrap.php
+++ b/application/tests/Bootstrap.php
@@ -324,6 +324,9 @@ switch (ENVIRONMENT)
 /*
 require __DIR__ . '/_ci_phpunit_test/patcher/bootstrap.php';
 MonkeyPatchManager::init([
+	// If you want debug log, set `debug` true, and optionally you can set the log file path
+	'debug' => true,
+	'log_file' => '/tmp/monkey-patch-debug.log',
 	// PHP Parser: PREFER_PHP7, PREFER_PHP5, ONLY_PHP7, ONLY_PHP5
 	'php_parser' => 'PREFER_PHP5',
 	'cache_dir' => TESTPATH . '_ci_phpunit_test/tmp/cache',
docs: how to enable debug mode and set the log file path, as comment