diff --git a/build/target-repository/bootstrap.php b/build/target-repository/bootstrap.php
index 3da92efab97..1d4dbaab0c3 100644
--- a/build/target-repository/bootstrap.php
+++ b/build/target-repository/bootstrap.php
@@ -39,35 +39,3 @@ spl_autoload_register(function (string $class): void {
         }
     }
 });
-
-if (! interface_exists('UnitEnum')) {
-    /**
-     * @since 8.1
-     */
-    interface UnitEnum
-    {
-        /**
-         * @return static[]
-         */
-        public static function cases(): array;
-    }
-}
-
-if (! interface_exists('BackedEnum')) {
-    /**
-     * @since 8.1
-     */
-    interface BackedEnum extends UnitEnum {
-        /**
-         * @param int|string $value
-         * @return $this
-         */
-        public static function from($value);
-
-        /**
-         * @param int|string $value
-         * @return $this|null
-         */
-        public static function tryFrom($value);
-    }
-}
diff --git a/build/target-repository/stubs-rector/Internal/EnumInterfaces.php b/build/target-repository/stubs-rector/Internal/EnumInterfaces.php
new file mode 100644
index 00000000000..6f613db3ae0
--- /dev/null
+++ b/build/target-repository/stubs-rector/Internal/EnumInterfaces.php
@@ -0,0 +1,33 @@
+<?php
+
+if (! interface_exists('UnitEnum')) {
+    /**
+     * @since 8.1
+     */
+    interface UnitEnum
+    {
+        /**
+         * @return static[]
+         */
+        public static function cases(): array;
+    }
+}
+
+if (! interface_exists('BackedEnum')) {
+    /**
+     * @since 8.1
+     */
+    interface BackedEnum extends UnitEnum {
+        /**
+         * @param int|string $value
+         * @return $this
+         */
+        public static function from($value);
+
+        /**
+         * @param int|string $value
+         * @return $this|null
+         */
+        public static function tryFrom($value);
+    }
+}
diff --git a/src/Autoloading/BootstrapFilesIncluder.php b/src/Autoloading/BootstrapFilesIncluder.php
index d6af3a5870b..3b983e452aa 100644
--- a/src/Autoloading/BootstrapFilesIncluder.php
+++ b/src/Autoloading/BootstrapFilesIncluder.php
@@ -12,6 +12,14 @@ use Webmozart\Assert\Assert;
 
 final class BootstrapFilesIncluder
 {
+    /**
+     * @var string[]
+     */
+    private const STUBS = [
+        '/../../stubs-rector/PHPUnit/Framework/TestCase.php',
+        '/../../stubs-rector/Internal/EnumInterfaces.php',
+    ];
+
     public function __construct(
         private readonly ParameterProvider $parameterProvider
     ) {
@@ -49,8 +57,10 @@ final class BootstrapFilesIncluder
             }
         }
 
-        if (is_file(__DIR__ . '/../../stubs-rector/PHPUnit/Framework/TestCase.php')) {
-            require_once __DIR__ . '/../../stubs-rector/PHPUnit/Framework/TestCase.php';
+        foreach (self::STUBS as $stub) {
+            if (is_file(__DIR__ . $stub)) {
+                require_once __DIR__ . $stub;
+            }
         }
     }
 }