diff --git a/core/modules/system/templates/html.html.twig b/core/modules/system/templates/html.html.twig
index 50fa76f..c020c4a 100644
--- a/core/modules/system/templates/html.html.twig
+++ b/core/modules/system/templates/html.html.twig
@@ -22,6 +22,8 @@
  * - styles: Style tags necessary to import all necessary CSS files in the head.
  * - scripts: Script tags necessary to load the JavaScript files and settings
  *   in the head.
+ * - scripts_bottom: Script tags necessary to load the JavaScript files before
+ *   clising BODY tag.
  * - db_offline: A flag indicating if the database is offline.
  *
  * @see template_preprocess_html()
diff --git a/core/themes/classy/templates/layout/html.html.twig b/core/themes/classy/templates/layout/html.html.twig
index 34c8c56..37561f9 100644
--- a/core/themes/classy/templates/layout/html.html.twig
+++ b/core/themes/classy/templates/layout/html.html.twig
@@ -22,6 +22,8 @@
  * - styles: Style tags necessary to import all necessary CSS files in the head.
  * - scripts: Script tags necessary to load the JavaScript files and settings
  *   in the head.
+ * - scripts_bottom: Script tags necessary to load the JavaScript files before
+ *   clising BODY tag.
  * - db_offline: A flag indicating if the database is offline.
  *
  * @see template_preprocess_html()