diff --git a/config/config.exs b/config/config.exs
index b0036fff0..9be1c721f 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -502,7 +502,8 @@
     mailer: 10,
     transmogrifier: 20,
     scheduled_activities: 10,
-    background: 5
+    background: 5,
+    attachments_cleanup: 5
   ]
 
 config :pleroma, :workers,