diff --git a/core/modules/system/templates/html.html.twig b/core/modules/system/templates/html.html.twig
index 50fa76f..3faf18c 100644
--- a/core/modules/system/templates/html.html.twig
+++ b/core/modules/system/templates/html.html.twig
@@ -20,8 +20,10 @@
  * - page_bottom: Closing rendered markup. This variable should be printed after
  *   'page'.
  * - styles: Style tags necessary to import all necessary CSS files in the head.
- * - scripts: Script tags necessary to load the JavaScript files and settings
+ * - scripts: Script tags necessary to load JavaScript files and settings
  *   in the head.
+ * - scripts_bottom: Script tags necessary to load JavaScript files before the
+ *   closing <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..ddb3372 100644
--- a/core/themes/classy/templates/layout/html.html.twig
+++ b/core/themes/classy/templates/layout/html.html.twig
@@ -20,8 +20,10 @@
  * - page_bottom: Closing rendered markup. This variable should be printed after
  *   'page'.
  * - styles: Style tags necessary to import all necessary CSS files in the head.
- * - scripts: Script tags necessary to load the JavaScript files and settings
+ * - scripts: Script tags necessary to load JavaScript files and settings
  *   in the head.
+ * - scripts_bottom: Script tags necessary to load JavaScript files before the
+ *   closing <body> tag.
  * - db_offline: A flag indicating if the database is offline.
  *
  * @see template_preprocess_html()