diff --git a/bootstrap_layouts.module b/bootstrap_layouts.module
index 6f0dba5..b2fcb0c 100644
--- a/bootstrap_layouts.module
+++ b/bootstrap_layouts.module
@@ -153,7 +153,11 @@ function _bootstrap_layouts_preprocess_layout(array &$variables) {
 
   // Create region variables based on the layout settings.
   foreach ($layout->getSetting('regions', []) as $region => $region_settings) {
-    $region_attributes = new Attribute(_bootstrap_layouts_parse_attributes($region_settings['attributes'], $tokens));
+    $parsed_attributes = _bootstrap_layouts_parse_attributes($region_settings['attributes'], $tokens);
+    if (!empty($variables['region_attributes'][$region])) {
+      $parsed_attributes = NestedArray::mergeDeep($parsed_attributes, $variables['region_attributes'][$region]);
+    }
+    $region_attributes = new Attribute($parsed_attributes);
     $region_attributes->addClass(array_keys($region_settings['classes']));
     if (!empty($region_settings['add_region_classes'])) {
       $region_attributes->addClass(['bs-region', Html::cleanCssIdentifier("bs-region--$region")]);