diff --git a/extensions/mentions/composer.json b/extensions/mentions/composer.json
index 946c7c9f7b..9182a9fa5d 100644
--- a/extensions/mentions/composer.json
+++ b/extensions/mentions/composer.json
@@ -78,6 +78,8 @@
     "require-dev": {
         "flarum/core": "*@dev",
         "flarum/tags": "*@dev",
+        "flarum/approval": "*@dev",
+        "flarum/flags": "*@dev",
         "flarum/testing": "^2.0"
     },
     "repositories": [
diff --git a/extensions/mentions/tests/integration/api/NotificationsTest.php b/extensions/mentions/tests/integration/api/NotificationsTest.php
new file mode 100644
index 0000000000..95f17b5e23
--- /dev/null
+++ b/extensions/mentions/tests/integration/api/NotificationsTest.php
@@ -0,0 +1,102 @@
+<?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\Mentions\tests\integration\api\NotificationsTest;
+
+use Carbon\Carbon;
+use Flarum\Discussion\Discussion;
+use Flarum\Group\Group;
+use Flarum\Post\Post;
+use Flarum\Testing\integration\RetrievesAuthorizedUsers;
+use Flarum\Testing\integration\TestCase;
+use Flarum\User\User;
+use PHPUnit\Framework\Attributes\Test;
+
+class NotificationsTest extends TestCase
+{
+    use RetrievesAuthorizedUsers;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->extension('flarum-mentions');
+
+        $this->prepareDatabase([
+            User::class => [
+                $this->normalUser(),
+                ['id' => 3, 'username' => 'acme', 'email' => 'acme@machine.local', 'is_email_confirmed' => 1],
+            ],
+            Discussion::class => [
+                ['id' => 1, 'title' => __CLASS__, 'created_at' => Carbon::now(), 'last_posted_at' => Carbon::now(), 'user_id' => 1, 'first_post_id' => 1, 'comment_count' => 1, 'last_post_number' => 2, 'last_post_id' => 2],
+            ],
+            Post::class => [
+                ['id' => 1, 'discussion_id' => 1, 'created_at' => Carbon::createFromDate(1975, 5, 21)->toDateTimeString(), 'user_id' => 1, 'type' => 'comment', 'content' => '<t><p>foo bar</p></t>', 'number' => 1],
+                ['id' => 2, 'discussion_id' => 1, 'created_at' => Carbon::createFromDate(1975, 5, 21)->toDateTimeString(), 'user_id' => 3, 'type' => 'comment', 'content' => '<t><p>foo bar</p></t>', 'number' => 2],
+            ],
+            'group_user' => [
+                ['group_id' => Group::MEMBER_ID, 'user_id' => 2],
+            ],
+        ]);
+    }
+
+    #[Test]
+    public function approving_reply_sends_mention_notification()
+    {
+        $this->extensions = ['flarum-flags', 'flarum-approval', 'flarum-mentions'];
+
+        $this->app();
+
+        $this->database()
+            ->table('group_permission')
+            ->where('group_id', Group::MEMBER_ID)
+            ->where('permission', 'discussion.replyWithoutApproval')
+            ->delete();
+
+        /** @var User $mainUser */
+        $mainUser = User::query()->find(3);
+
+        $this->assertEquals(0, $mainUser->getUnreadNotificationCount());
+
+        $response = $this->send(
+            $this->request('POST', '/api/posts', [
+                'authenticatedAs' => 2,
+                'json' => [
+                    'data' => [
+                        'attributes' => [
+                            'content' => '@"mainUser"#p2',
+                        ],
+                        'relationships' => [
+                            'discussion' => ['data' => ['id' => 1]],
+                        ],
+                    ]
+                ]
+            ])
+        );
+
+        $this->assertEquals(0, $mainUser->getUnreadNotificationCount());
+
+        $json = json_decode($response->getBody()->getContents(), true);
+
+        $this->send(
+            $this->request('PATCH', '/api/posts/'.$json['data']['id'], [
+                'authenticatedAs' => 1,
+                'json' => [
+                    'data' => [
+                        'attributes' => [
+                            'isApproved' => 1,
+                        ]
+                    ]
+                ]
+            ])
+        );
+
+        $this->assertEquals(1, $mainUser->getUnreadNotificationCount());
+    }
+}