diff --git a/migrations/000.173.sql b/migrations/000.173.sql
new file mode 100644
index 0000000..d01f66b
--- /dev/null
+++ b/migrations/000.173.sql
@@ -0,0 +1,3 @@
+-- P5-5118: add index on order-orders inserted
+
+CREATE INDEX orders_inserted_index ON "order-orders" (inserted);