diff --git a/apps/edr-freight-api/src/modules/bookings/booking-transition.service.ts b/apps/edr-freight-api/src/modules/bookings/booking-transition.service.ts
index 52def42f0..ae0791965 100644
--- a/apps/edr-freight-api/src/modules/bookings/booking-transition.service.ts
+++ b/apps/edr-freight-api/src/modules/bookings/booking-transition.service.ts
@@ -56,7 +56,11 @@ export class BookingTransitionService {
     private readonly bookingClearanceService: BookingClearanceService,
     @Inject(forwardRef(() => ClearanceWorkflowService))
     private readonly workflowService: ClearanceWorkflowService,
-        private readonly invoiceService: BookingInvoiceService,
+    // forwardRef: booking-invoice.service now pulls in the wagon-cancellation
+    // service, whose cross-module imports close a require cycle through this
+    // file — without it the class is undefined at decorator time.
+    @Inject(forwardRef(() => BookingInvoiceService))
+    private readonly invoiceService: BookingInvoiceService,
     private readonly containerValidationService: ContainerValidationService,
     private readonly notifier: BookingLifecycleNotifierService,
     private readonly events: EventEmitter2,
diff --git a/apps/edr-freight-api/src/modules/contracts/contract-booking.service.ts b/apps/edr-freight-api/src/modules/contracts/contract-booking.service.ts
index 1147c018b..59afdb585 100644
--- a/apps/edr-freight-api/src/modules/contracts/contract-booking.service.ts
+++ b/apps/edr-freight-api/src/modules/contracts/contract-booking.service.ts
@@ -98,6 +98,9 @@ export class ContractBookingService {
     private readonly containerTypesService: ContainerTypesService,
     private readonly ruleEngineService: RuleEngineService,
     private readonly milestoneService: ClearanceMilestoneService,
+    // forwardRef: part of the booking-invoice ⇄ wagon-cancellation ⇄ contracts
+    // require cycle (see BookingTransitionService).
+    @Inject(forwardRef(() => BookingInvoiceService))
     private readonly invoiceService: BookingInvoiceService,
     private readonly bookingNotifier: BookingLifecycleNotifierService,
     private readonly dataSource: DataSource,