diff --git a/composer.json b/composer.json
index 87ca610..f52ed8a 100644
--- a/composer.json
+++ b/composer.json
@@ -9,7 +9,7 @@
         "source": "https://git.drupalcode.org/project/fivestar"
     },
     "require": {
-        "drupal/core": "^9.2",
+        "drupal/core": "^9.2 || ^10",
         "drupal/votingapi": "^3.0"
     },
     "minimum-stability": "dev"
diff --git a/fivestar.info.yml b/fivestar.info.yml
index 98a8b54..da7bb11 100644
--- a/fivestar.info.yml
+++ b/fivestar.info.yml
@@ -2,7 +2,7 @@ name: Fivestar
 type: module
 description: 'Enables fivestar ratings on content, users, etc.'
 package: Voting
-core_version_requirement: ^9.2
+core_version_requirement: ^9.2 || ^10
 dependencies:
   - votingapi:votingapi
 
diff --git a/fivestar.libraries.yml b/fivestar.libraries.yml
index 1e829b7..90123d1 100644
--- a/fivestar.libraries.yml
+++ b/fivestar.libraries.yml
@@ -7,9 +7,9 @@ fivestar.base:
     js/fivestar.js: {}
 
   dependencies:
-    - core/jquery
     - core/drupal
-    - core/jquery.once
+    - core/jquery
+    - core/once
     - core/drupal.ajax
 
 fivestar.admin:
@@ -18,15 +18,6 @@ fivestar.admin:
     component:
       css/fivestar-admin.css: {}
 
-fivestar.ajax:
-  version: VERSION
-  js:
-    js/fivestar.ajax.js: {}
-  dependencies:
-    - core/jquery
-    - core/drupal
-    - core/jquery.once
-
 # Widgets
 # Right now does not include RTL handling
 basic:
diff --git a/fivestar.module b/fivestar.module
index dbc4e2c..4ad1917 100644
--- a/fivestar.module
+++ b/fivestar.module
@@ -78,17 +78,6 @@ function fivestar_theme() {
         'microdata' => [],
       ],
     ],
-    'fivestar_preview' => [
-      'function' => 'theme_fivestar_preview',
-      'variables' => [
-        'style' => NULL,
-        'text' => NULL,
-        'stars' => NULL,
-        'unvote' => NULL,
-        'title' => NULL,
-      ],
-      'file' => 'includes/fivestar.theme.inc',
-    ],
     'fivestar_formatter_rating' => [
       'render element' => 'element',
     ],
diff --git a/includes/fivestar.theme.inc b/includes/fivestar.theme.inc
deleted file mode 100644
index e1cbda6..0000000
--- a/includes/fivestar.theme.inc
+++ /dev/null
@@ -1,44 +0,0 @@
-<?php
-
-/**
- * @file
- * Provides the theming functions for fivestar.
- */
-
-use Drupal\Core\Render\Element;
-use Drupal\Core\Render\Element\RenderElement;
-
-/**
- *
- */
-function theme_fivestar_preview($variables) {
-  extract($variables, EXTR_SKIP);
-  $values = [
-    'vote_average' => 50,
-    'vote_user' => 80,
-    'vote_count' => 20,
-  ];
-  $settings = [
-    'stars' => $stars,
-    'allow_clear' => $unvote,
-    'allow_revote' => $revote,
-    'allow_ownvote' => $ownvote,
-    'style' => $style,
-    'text' => $text,
-    'title' => $title,
-    'autosubmit' => FALSE,
-    'vote_type' => 'vote',
-  ];
-
-  $form = drupal_get_form('fivestar_custom_widget', $values, $settings);
-  $form = \Drupal::service('renderer')->render($form);
-  // This regex is sadly necessary because having duplicate form_tokens or
-  // form_id elements can cause the content type form to choke. Forms inside of
-  // forms is also frowned upon, so this removes the wrapping form tag as well.
-  $form = str_replace(['<form', '</form>'], [
-    '<div',
-    '</div>',
-  ], $form);
-  $form = preg_replace('/( method=".*?")|( action=".*?")|(<input.*?name="(form_token|form_id|destination|form_build_id)".*?\/>)/', '', $form);
-  return $form;
-}
diff --git a/js/fivestar.js b/js/fivestar.js
index c1b7ac1..973e229 100644
--- a/js/fivestar.js
+++ b/js/fivestar.js
@@ -20,7 +20,7 @@
         }
       });
 
-      $(context).find('div.fivestar-form-item').once('fivestar').each(function() {
+      $(once('fivestar', 'div.fivestar-form-item', context)).each(function() {
         var $cancel, $container, $options, $select, $this, index;
         $this = $(this);
         $container = $('<div class="fivestar-widget clearfix"></div>');
@@ -89,21 +89,4 @@
       }
     }
   };
-})(jQuery);
-
-
-/**
- * @file
- *
- * Fivestar AJAX for updating fivestar widgets.
- */
-
-/**
- * Create a degradeable star rating interface out of a simple form structure.
- */
-(function($) {
-  Drupal.AjaxCommands.prototype.fivestarUpdate = function(ajax, response, status) {
-    response.selector = $('.fivestar-form-item', ajax.element.form);
-    ajax.commands.insert(ajax, response, status);
-  };
-})(jQuery);
+})(jQuery, once);