diff --git a/app/Track.php b/app/Track.php
index 984b576b..c452b020 100644
--- a/app/Track.php
+++ b/app/Track.php
@@ -308,7 +308,7 @@ class Track extends Model
             'is_explicit' => (bool)$track->is_explicit,
             'is_downloadable' => (bool)$track->is_downloadable,
             'is_published' => (bool)$track->isPublished(),
-            'published_at' => $track->published_at,
+            'published_at' => $track->published_at->format('c'),
             'duration' => $track->duration,
             'genre' => $track->genre != null
                 ?