diff --git a/core/modules/block_place/block_place.module b/core/modules/block_place/block_place.module
index 34f1866..dc0b7ef 100644
--- a/core/modules/block_place/block_place.module
+++ b/core/modules/block_place/block_place.module
@@ -89,18 +89,18 @@ function block_place_toolbar() {
 }
 
 /**
- * Implements hook_page_top().
+ * Implements hook_page_attachments().
  *
  * Add block place library if dialog should be open to sort blocks.
  */
-function block_place_page_top(array &$page_top) {
+function block_place_page_attachments(array &$attachments) {
   if ($region_sort = \Drupal::request()->query->get('block-place-region-sort')) {
-    $page_top['#attached']['library'][] = 'block_place/drupal.block_place.js';
+    $attachments['#attached']['library'][] = 'block_place/drupal.block_place.js';
     $destination = \Drupal::destination()->get();
     $destination = explode('?', $destination)[0];
     $theme = \Drupal::theme()->getActiveTheme();
     $url = Url::fromRoute('block_place.sort', ['region' => $region_sort, 'theme' => $theme->getName()], ['query' => ['destination' => $destination]]);
-    $page_top['#attached']['drupalSettings']['block_place'] = [
+    $attachments['#attached']['drupalSettings']['block_place'] = [
       'dialog_url' => $url->setAbsolute()->toString(),
       // @todo Always use 'off_canvas' in https://www.drupal.org/node/2784443.
       'dialog_type' => \Drupal::moduleHandler()->moduleExists('outside_in') ? 'dialog_off_canvas' : 'modal',