diff --git a/priv/repo/migrations/20190410152859_add_participation_updated_at_index.exs b/priv/repo/migrations/20190410152859_add_participation_updated_at_index.exs
new file mode 100644
index 000000000..1ce688c52
--- /dev/null
+++ b/priv/repo/migrations/20190410152859_add_participation_updated_at_index.exs
@@ -0,0 +1,7 @@
+defmodule Pleroma.Repo.Migrations.AddParticipationUpdatedAtIndex do
+  use Ecto.Migration
+
+  def change do
+    create index(:conversation_participations, ["updated_at desc"])
+  end
+end