diff --git a/tools/create_invoice.py b/tools/create_invoice.py
index 1df3454..ea31f93 100644
--- a/tools/create_invoice.py
+++ b/tools/create_invoice.py
@@ -47,7 +47,7 @@ def create_invoice(args: dict) -> dict:
         stripe.InvoiceItem.create(
             customer=customer_id,
             amount=amount_cents,
-            currency="gbp",
+            currency="usd",
             description=args.get("tripDetails", "Service Invoice"),
         )