diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8ab35fec3..10b13f261 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -83,6 +83,7 @@
 - Update ApiV1Controller, set last_active_at ([b6419545](https://github.com/pixelfed/pixelfed/commit/b6419545))
 - Update AdminShadowFilter, fix deleted profile bug ([a492a95a](https://github.com/pixelfed/pixelfed/commit/a492a95a))
 - Update FollowerService, add $silent param to remove method to more efficently purge relationships ([1664a5bc](https://github.com/pixelfed/pixelfed/commit/1664a5bc))
+- Update AP ProfileTransformer, add published attribute ([adfaa2b1](https://github.com/pixelfed/pixelfed/commit/adfaa2b1))
 -  ([](https://github.com/pixelfed/pixelfed/commit/))
 
 ## [v0.11.9 (2023-08-21)](https://github.com/pixelfed/pixelfed/compare/v0.11.8...v0.11.9)
diff --git a/app/Transformer/ActivityPub/ProfileTransformer.php b/app/Transformer/ActivityPub/ProfileTransformer.php
index cdd4eb82d..45d22cd11 100644
--- a/app/Transformer/ActivityPub/ProfileTransformer.php
+++ b/app/Transformer/ActivityPub/ProfileTransformer.php
@@ -40,6 +40,7 @@ class ProfileTransformer extends Fractal\TransformerAbstract
           'url'                       => $profile->url(),
           'manuallyApprovesFollowers' => (bool) $profile->is_private,
           'indexable'                 => (bool) $profile->indexable,
+          'published'                 => $profile->created_at->format('Y-m-d') . 'T00:00:00Z',
           'publicKey' => [
             'id'           => $profile->permalink().'#main-key',
             'owner'        => $profile->permalink(),