diff --git a/migrations/000.422.sql b/migrations/000.422.sql
new file mode 100644
index 0000000..57a66ab
--- /dev/null
+++ b/migrations/000.422.sql
@@ -0,0 +1,6 @@
+CREATE INDEX ON carts (order_id);
+CREATE INDEX ON inquiries (pre_payment_order_row_id);
+CREATE INDEX ON inquiries (repaid_order_id);
+CREATE INDEX ON invoices (order_id);
+CREATE INDEX ON samples (order_id);
+CREATE INDEX ON samples (order_row_id);
\ No newline at end of file