diff --git a/src/Kernel.php b/src/Kernel.php
index 4ec6ce1..23fb54a 100644
--- a/src/Kernel.php
+++ b/src/Kernel.php
@@ -102,7 +102,7 @@ private function disableDebugClassLoader()
     /**
      * @return ContainerInterface
      */
-    private function getPHPDIContainer()
+    protected function getPHPDIContainer()
     {
         if ($this->phpdiContainer === null) {
             $builder = new \DI\ContainerBuilder();