diff --git a/src/Form/JavascriptLibrariesCustomAddForm.php b/src/Form/JavascriptLibrariesCustomAddForm.php
index 3be3855..c503aea 100644
--- a/src/Form/JavascriptLibrariesCustomAddForm.php
+++ b/src/Form/JavascriptLibrariesCustomAddForm.php
@@ -7,6 +7,7 @@
 
 namespace Drupal\javascript_libraries\Form;
 
+use Drupal\Core\Database\Database;
 use Drupal\Core\Form\FormBase;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Render\Element;
@@ -138,7 +139,7 @@ class JavascriptLibrariesCustomAddForm extends FormBase {
       ->get('javascript_libraries_custom_libraries');
     switch ($form_state->getValue('library_type')) {
       case 'external':
-        $id = 'ext-' . db_next_id();
+        $id = 'ext-' . Database::getConnection()->nextId();
         $lib_id = $form_state->getValue('lib_id');
         if (isset($lib_id) && !empty($lib_id)) {
           $id = $lib_id;
diff --git a/src/Form/JavascriptLibrariesEditForm.php b/src/Form/JavascriptLibrariesEditForm.php
index a1308b3..6fd8b1d 100644
--- a/src/Form/JavascriptLibrariesEditForm.php
+++ b/src/Form/JavascriptLibrariesEditForm.php
@@ -7,6 +7,7 @@
 
 namespace Drupal\javascript_libraries\Form;
 
+use Drupal\Core\Database\Database;
 use Drupal\Core\Form\FormBase;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Render\Element;
@@ -145,7 +146,7 @@ class JavascriptLibrariesEditForm extends FormBase {
       case 'external':
         if (empty($form['#library']['id'])) {
           // New URL
-          $form['#library']['id'] = 'ext-' . db_next_id();
+          $form['#library']['id'] = 'ext-' . Database::getConnection()->nextId();
         }
         // @FIXME
         // Could not extract the default value because it is either indeterminate, or