diff --git a/core/includes/common.inc b/core/includes/common.inc
index d81fd13..e2a5d4f 100644
--- a/core/includes/common.inc
+++ b/core/includes/common.inc
@@ -21,7 +21,6 @@
 use Drupal\Core\StringTranslation\PluralTranslatableMarkup;
 use Drupal\Core\Render\BubbleableMetadata;
 use Drupal\Core\Render\Element;
-use Drupal\Core\Render\BareHtmlPageRenderer;
 
 /**
  * @defgroup php_wrappers PHP wrapper functions
@@ -897,7 +896,7 @@ function drupal_render_children(&$element, $children_keys = NULL) {
   $output = '';
   foreach ($children_keys as $key) {
     if (!empty($element[$key])) {
-      $output .= \Drupal::service('bare_html_page_renderer')->render($element[$key]);
+      $output .= \Drupal::service('renderer')->render($element[$key]);
     }
   }
   return Markup::create($output);
diff --git a/core/tests/Drupal/Tests/Core/Render/RendererBubblingTest.php b/core/tests/Drupal/Tests/Core/Render/RendererBubblingTest.php
index a3835e1..43f85c7 100644
--- a/core/tests/Drupal/Tests/Core/Render/RendererBubblingTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/RendererBubblingTest.php
@@ -45,7 +45,7 @@ public function testBubblingWithoutPreRender() {
     $element = [
       '#type' => 'container',
       '#cache' => [
-        'keys' => ['simpletest', 'drupal_render', 'children_attached'],
+        'keys' => ['simpletest', 'renderer', 'children_attached'],
       ],
       '#attached' => ['library' => ['test/parent']],
       '#title' => 'Parent',
@@ -67,7 +67,7 @@ public function testBubblingWithoutPreRender() {
 
     // Load the element from cache and verify the presence of the #attached
     // JavaScript.
-    $element = ['#cache' => ['keys' => ['simpletest', 'drupal_render', 'children_attached']]];
+    $element = ['#cache' => ['keys' => ['simpletest', 'renderer', 'children_attached']]];
     $this->assertTrue(strlen($this->renderer->renderRoot($element)) > 0, 'The element was retrieved from cache.');
     $this->assertEquals($element['#attached']['library'], $expected_libraries, 'The element, child and subchild #attached libraries are included.');
   }
diff --git a/core/tests/Drupal/Tests/Core/Render/RendererPlaceholdersTest.php b/core/tests/Drupal/Tests/Core/Render/RendererPlaceholdersTest.php
index 530f603..8d9bf0e 100644
--- a/core/tests/Drupal/Tests/Core/Render/RendererPlaceholdersTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/RendererPlaceholdersTest.php
@@ -1007,7 +1007,7 @@ public function testRenderChildrenPlaceholdersDifferentArguments() {
     $this->assertSame($element['#attached']['drupalSettings'], $expected_js_settings, '#attached is modified; both the original JavaScript setting and the ones added by each placeholder #lazy_builder callback exist.');
 
     // GET request: validate cached data.
-    $cached_element = $this->memoryCache->get('simpletest:drupal_render:children_placeholders')->data;
+    $cached_element = $this->memoryCache->get('simpletest:renderer:children_placeholders')->data;
     $expected_element = [
       '#attached' => [
         'drupalSettings' => [
@@ -1077,7 +1077,7 @@ protected function generatePlaceholdersWithChildrenTestElement(array $args_1, ar
     $test_element = [
       '#type' => 'details',
       '#cache' => [
-        'keys' => ['simpletest', 'drupal_render', 'children_placeholders'],
+        'keys' => ['simpletest', 'renderer', 'children_placeholders'],
       ],
       '#title' => 'Parent',
       '#attached' => [