diff --git a/packages/lib-db/src/migrations/sql/20240626200803-player-inventory-idx.ts b/packages/lib-db/src/migrations/sql/20240626200803-player-inventory-idx.ts
new file mode 100644
index 0000000000..ef34bd050e
--- /dev/null
+++ b/packages/lib-db/src/migrations/sql/20240626200803-player-inventory-idx.ts
@@ -0,0 +1,13 @@
+import { Knex } from 'knex';
+
+export async function up(knex: Knex): Promise<void> {
+  await knex.schema.alterTable('playerInventory', (table) => {
+    table.index(['playerId', 'domain']);
+  });
+}
+
+export async function down(knex: Knex): Promise<void> {
+  await knex.schema.alterTable('playerInventory', (table) => {
+    table.dropIndex(['playerId', 'domain']);
+  });
+}