diff --git a/priv/repo/migrations/20241022205853_add_purchased_at_index_to_records.exs b/priv/repo/migrations/20241022205853_add_purchased_at_index_to_records.exs
new file mode 100644
index 00000000..f4d15a9d
--- /dev/null
+++ b/priv/repo/migrations/20241022205853_add_purchased_at_index_to_records.exs
@@ -0,0 +1,7 @@
+defmodule MusicLibrary.Repo.Migrations.AddPurchasedAtIndexToRecords do
+  use Ecto.Migration
+
+  def change do
+    create index("records", [:purchased_at])
+  end
+end
diff --git a/test/music_library_web/controllers/stats_controller_test.exs b/test/music_library_web/controllers/stats_controller_test.exs
index d40b2dff..fb15a44c 100644
--- a/test/music_library_web/controllers/stats_controller_test.exs
+++ b/test/music_library_web/controllers/stats_controller_test.exs
@@ -50,7 +50,9 @@ defmodule MusicLibraryWeb.StatsControllerTest do
     end
 
     test "it shows the latest purchase", %{conn: conn, collection: collection} do
-      latest_record = Enum.max_by(collection, & &1.purchased_at)
+      # purchased_at has second precision, so finding the latest purchased using then
+      # highest purchsed_at value doesn't work, as it picks the wrong value.
+      latest_record = List.last(collection)
 
       conn = get(conn, "/")