diff --git a/src/aux/email_client.ts b/src/auxiliary/email_client.ts
similarity index 100%
rename from src/aux/email_client.ts
rename to src/auxiliary/email_client.ts
diff --git a/src/aux/payment_client.ts b/src/auxiliary/payment_client.ts
similarity index 100%
rename from src/aux/payment_client.ts
rename to src/auxiliary/payment_client.ts
diff --git a/src/part3/checkout.ts b/src/part3/checkout.ts
index a017cf7..ba8cd78 100644
--- a/src/part3/checkout.ts
+++ b/src/part3/checkout.ts
@@ -11,8 +11,8 @@
 
 import * as restate from "@restatedev/restate-sdk";
 import { v4 as uuid } from "uuid";
-import { PaymentClient } from "../aux/payment_client";
-import { EmailClient } from "../aux/email_client";
+import { PaymentClient } from "../auxiliary/payment_client";
+import { EmailClient } from "../auxiliary/email_client";
 
 const checkout = async (
   ctx: restate.RpcContext,
diff --git a/src/part4/checkout.ts b/src/part4/checkout.ts
index 2c3ed3b..52b80cc 100644
--- a/src/part4/checkout.ts
+++ b/src/part4/checkout.ts
@@ -11,8 +11,8 @@
 
 import * as restate from "@restatedev/restate-sdk";
 import { v4 as uuid } from "uuid";
-import { EmailClient } from "../aux/email_client";
-import { PaymentClient } from "../aux/payment_client";
+import { EmailClient } from "../auxiliary/email_client";
+import { PaymentClient } from "../auxiliary/payment_client";
 
 const checkout = async (
   ctx: restate.RpcContext,