diff --git a/src/Element/Selectize.php b/src/Element/Selectize.php
index 27bd450..b8761cb 100644
--- a/src/Element/Selectize.php
+++ b/src/Element/Selectize.php
@@ -47,7 +47,7 @@ class Selectize extends Select {
 
       // If drag_drop plugin is requested, we need to load the sortable plugin.
       if (isset($element['#settings']['plugins']) && in_array('drag_drop', $element['#settings']['plugins'])) {
-        $complete_form['#attached']['library'][] = 'core/jquery.ui.sortable';
+        $complete_form['#attached']['library'][] = 'jquery_ui_sortable/sortable';
       }
     }
 
diff --git a/src/Element/SelectizeEntityAutocomplete.php b/src/Element/SelectizeEntityAutocomplete.php
index e090f72..4cbabfc 100644
--- a/src/Element/SelectizeEntityAutocomplete.php
+++ b/src/Element/SelectizeEntityAutocomplete.php
@@ -103,7 +103,7 @@ class SelectizeEntityAutocomplete extends EntityAutocomplete {
         }
         // If drag_drop plugin is requested, we need to load the sortable plugin.
         if (isset($element['#settings']['plugins']) && in_array('drag_drop', $element['#settings']['plugins'])) {
-          $libraries = ['core/jquery.ui.sortable'];
+          $libraries = ['jquery_ui_sortable/sortable'];
         }
         // Inject the selectize library and CSS assets.
         $libraries[] = 'selectize/core';