diff --git a/build/target-repository/bootstrap.php b/build/target-repository/bootstrap.php
index d6dd77ec353..e8ee6428d0a 100644
--- a/build/target-repository/bootstrap.php
+++ b/build/target-repository/bootstrap.php
@@ -2,6 +2,34 @@
 
 declare(strict_types=1);
 
+use PHPParser\Node;
+use PHPUnit\Runner\Version;
+
+/**
+ * The preload.php contains 2 dependencies
+ *      - phpstan/phpdoc-parser
+ *      - nikic/php-parser
+ *
+ * They need to be loaded early to avoid conflict version between rector prefixed vendor and Project vendor
+ * For example, a project may use phpstan/phpdoc-parser v1, while rector uses phpstan/phpdoc-parser uses v2, that will error as class or logic are different.
+ */
+$isGlobalPHPUnit = class_exists(Version::class, false);
+if (
+    // verify PHPUnit is running
+    defined('PHPUNIT_COMPOSER_INSTALL')
+
+    // no need to preload if Node interface exists
+    && ! interface_exists(Node::class, false)
+
+    && ! $isGlobalPHPUnit
+
+    // ensure force autoload version with class_exists() with true argument as not yet loaded
+    // for phpunit 12+ only
+    && class_exists(Version::class, true) && (int) Version::id() >= 12
+) {
+    require_once __DIR__ . '/preload.php';
+}
+
 // inspired by https://github.com/phpstan/phpstan/blob/master/bootstrap.php
 spl_autoload_register(function (string $class): void {
     static $composerAutoloader;