diff --git a/extensions/lock/extend.php b/extensions/lock/extend.php
index 26000af97..dcb40b573 100644
--- a/extensions/lock/extend.php
+++ b/extensions/lock/extend.php
@@ -7,8 +7,9 @@
  * LICENSE file that was distributed with this source code.
  */
 
-use Flarum\Api\Serializer\BasicDiscussionSerializer;
-use Flarum\Api\Serializer\DiscussionSerializer;
+use Flarum\Api\Context;
+use Flarum\Api\Resource;
+use Flarum\Api\Schema;
 use Flarum\Discussion\Discussion;
 use Flarum\Discussion\Event\Saving;
 use Flarum\Discussion\Search\DiscussionSearcher;
@@ -33,24 +34,38 @@ return [
     new Extend\Locales(__DIR__.'/locale'),
 
     (new Extend\Notification())
-        ->type(DiscussionLockedBlueprint::class, BasicDiscussionSerializer::class, ['alert']),
+        ->type(DiscussionLockedBlueprint::class, ['alert']),
 
     (new Extend\Model(Discussion::class))
         ->cast('is_locked', 'bool'),
 
-    (new Extend\ApiSerializer(DiscussionSerializer::class))
-        ->attribute('isLocked', function (DiscussionSerializer $serializer, Discussion $discussion) {
-            return $discussion->is_locked;
-        })
-        ->attribute('canLock', function (DiscussionSerializer $serializer, Discussion $discussion) {
-            return $serializer->getActor()->can('lock', $discussion);
-        }),
+    (new Extend\ApiResource(Resource\DiscussionResource::class))
+        ->fields(fn () => [
+            Schema\Boolean::make('isLocked')
+                ->writable(fn (Discussion $discussion, Context $context) => $context->getActor()->can('lock', $discussion))
+                ->set(function (Discussion $discussion, bool $isLocked, Context $context) {
+                    $actor = $context->getActor();
+
+                    if ($discussion->is_locked === $isLocked) {
+                        return;
+                    }
+
+                    $discussion->is_locked = $isLocked;
+
+                    $discussion->raise(
+                        $discussion->is_locked
+                            ? new DiscussionWasLocked($discussion, $actor)
+                            : new DiscussionWasUnlocked($discussion, $actor)
+                    );
+                }),
+            Schema\Boolean::make('canLock')
+                ->get(fn (Discussion $discussion, Context $context) => $context->getActor()->can('lock', $discussion)),
+        ]),
 
     (new Extend\Post())
         ->type(DiscussionLockedPost::class),
 
     (new Extend\Event())
-        ->listen(Saving::class, Listener\SaveLockedToDatabase::class)
         ->listen(DiscussionWasLocked::class, Listener\CreatePostWhenDiscussionIsLocked::class)
         ->listen(DiscussionWasUnlocked::class, Listener\CreatePostWhenDiscussionIsUnlocked::class),
 
diff --git a/extensions/lock/src/Listener/SaveLockedToDatabase.php b/extensions/lock/src/Listener/SaveLockedToDatabase.php
deleted file mode 100755
index e3c107a4f..000000000
--- a/extensions/lock/src/Listener/SaveLockedToDatabase.php
+++ /dev/null
@@ -1,40 +0,0 @@
-<?php
-
-/*
- * This file is part of Flarum.
- *
- * For detailed copyright and license information, please view the
- * LICENSE file that was distributed with this source code.
- */
-
-namespace Flarum\Lock\Listener;
-
-use Flarum\Discussion\Event\Saving;
-use Flarum\Lock\Event\DiscussionWasLocked;
-use Flarum\Lock\Event\DiscussionWasUnlocked;
-
-class SaveLockedToDatabase
-{
-    public function handle(Saving $event): void
-    {
-        if (isset($event->data['attributes']['isLocked'])) {
-            $isLocked = (bool) $event->data['attributes']['isLocked'];
-            $discussion = $event->discussion;
-            $actor = $event->actor;
-
-            $actor->assertCan('lock', $discussion);
-
-            if ((bool) $discussion->is_locked === $isLocked) {
-                return;
-            }
-
-            $discussion->is_locked = $isLocked;
-
-            $discussion->raise(
-                $discussion->is_locked
-                    ? new DiscussionWasLocked($discussion, $actor)
-                    : new DiscussionWasUnlocked($discussion, $actor)
-            );
-        }
-    }
-}