diff --git a/composer.json b/composer.json
index aedf28f..e3c0c6b 100644
--- a/composer.json
+++ b/composer.json
@@ -65,6 +65,7 @@
         }
     },
     "require-dev": {
+        "flarum/audit": "2.x-dev",
         "flarum/bbcode": "^2.0.0",
         "flarum/testing": "^2.0.0",
         "flarum/phpstan": "^2.0.0",
diff --git a/extend.php b/extend.php
index 0aadfcc..87cbb08 100644
--- a/extend.php
+++ b/extend.php
@@ -16,6 +16,7 @@
 use Flarum\Settings\Event\Saved;
 use Flarum\User\Event\Saving;
 use Flarum\User\User;
+use FoF\UserBio\Event\BioChanged;
 
 return [
     (new Flarum\Frontend('forum'))
@@ -56,4 +57,11 @@
             (new \Flarum\Gdpr\Extend\UserData())
                 ->addType(Data\UserBioData::class),
         ]),
+
+    (new Flarum\Conditional())
+        ->whenExtensionEnabled('flarum-audit', fn () => [
+            (new \Flarum\Audit\Extend\Audit())
+                ->group('fof-user-bio')
+                ->listen(BioChanged::class, 'user.bio_changed', fn ($e) => ['user_id' => $e->user->id]),
+        ]),
 ];
diff --git a/resources/locale/en.yml b/resources/locale/en.yml
index 3eed591..3abe316 100644
--- a/resources/locale/en.yml
+++ b/resources/locale/en.yml
@@ -19,3 +19,12 @@ fof-user-bio:
             cancel_button: Cancel
             save_button: Save
             edit_bio_label: Edit bio
+
+# Labels for the audit log entries this extension produces, rendered by the (optional)
+# flarum/audit browser. Defined under the flarum-audit namespace so the audit frontend
+# resolves them, but shipped here so they travel with the extension that owns the actions.
+flarum-audit:
+    lib:
+        browser:
+            user:
+                bio_changed: Edited {username}'s bio
diff --git a/tests/integration/AuditTest.php b/tests/integration/AuditTest.php
new file mode 100644
index 0000000..6f06622
--- /dev/null
+++ b/tests/integration/AuditTest.php
@@ -0,0 +1,68 @@
+<?php
+
+/*
+ * This file is part of fof/user-bio.
+ *
+ * Copyright (c) FriendsOfFlarum.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace FoF\UserBio\Tests\integration;
+
+use Flarum\Audit\AuditLog;
+use Flarum\Audit\AuditLogger;
+use Flarum\Testing\integration\RetrievesAuthorizedUsers;
+use Flarum\Testing\integration\TestCase;
+use Flarum\User\User;
+use PHPUnit\Framework\Attributes\Test;
+
+class AuditTest extends TestCase
+{
+    use RetrievesAuthorizedUsers;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        // Lifecycle events fired outside the test transaction shouldn't create stray entries.
+        AuditLogger::$testMode = true;
+
+        $this->extension('flarum-audit', 'fof-user-bio');
+
+        $this->prepareDatabase([
+            'audit_log' => [],
+            User::class => [
+                [
+                    'id'       => 3,
+                    'username' => 'user3',
+                    'email'    => 'user3@example.com',
+                ],
+            ],
+        ]);
+    }
+
+    #[Test]
+    public function update()
+    {
+        $response = $this->send($this->request('PATCH', '/api/users/3', [
+            'authenticatedAs' => 1,
+            'json'            => [
+                'data' => [
+                    'attributes' => [
+                        'bio' => 'Hello World',
+                    ],
+                ],
+            ],
+        ]));
+
+        $this->assertEquals(200, $response->getStatusCode(), $response->getBody()->getContents());
+
+        $log = AuditLog::query()->where('action', 'user.bio_changed')->first();
+        $this->assertNotNull($log);
+        $this->assertEquals(1, $log->actor_id);
+        $this->assertEquals(['user_id' => 3], $log->payload);
+        $this->assertEquals('127.0.0.1', $log->ip_address);
+    }
+}