diff --git a/src/app.integration.ts b/src/app.integration.ts
index d1ef7b4..c8a0f45 100644
--- a/src/app.integration.ts
+++ b/src/app.integration.ts
@@ -11,6 +11,7 @@ import { DataSource } from 'typeorm';
 import { PatientsModule } from './modules/patients';
 import { AppointmentsModule } from './modules/appointments';
 import { ConsultationsModule } from './modules/consultations';
+import { PaymentTerminalsModule } from './modules/payment-terminals';
 
 // Import entities from all modules for TypeORM
 import { Patient } from './modules/patients/entities';
@@ -22,6 +23,11 @@ import {
   PrescriptionItem,
   VitalSignsRecord,
 } from './modules/consultations/entities';
+import {
+  TenantTerminalConfig,
+  TerminalPayment,
+  TerminalWebhookEvent,
+} from './modules/payment-terminals/entities';
 
 /**
  * Get all entities for TypeORM configuration
@@ -41,6 +47,10 @@ export function getAllEntities() {
     Prescription,
     PrescriptionItem,
     VitalSignsRecord,
+    // Payment Terminals
+    TenantTerminalConfig,
+    TerminalPayment,
+    TerminalWebhookEvent,
   ];
 }
 
@@ -51,6 +61,7 @@ export interface ModuleOptions {
   patients?: { enabled: boolean; basePath?: string };
   appointments?: { enabled: boolean; basePath?: string };
   consultations?: { enabled: boolean; basePath?: string };
+  paymentTerminals?: { enabled: boolean; basePath?: string };
 }
 
 /**
@@ -60,6 +71,7 @@ const defaultModuleOptions: ModuleOptions = {
   patients: { enabled: true, basePath: '/api' },
   appointments: { enabled: true, basePath: '/api' },
   consultations: { enabled: true, basePath: '/api' },
+  paymentTerminals: { enabled: true, basePath: '/api' },
 };
 
 /**
@@ -101,6 +113,17 @@ export function initializeModules(
     app.use(consultationsModule.router);
     console.log('✅ Consultations module initialized (CL-004)');
   }
+
+  // Initialize Payment Terminals Module
+  if (config.paymentTerminals?.enabled) {
+    const paymentTerminalsModule = new PaymentTerminalsModule({
+      dataSource,
+      basePath: config.paymentTerminals.basePath,
+    });
+    app.use(paymentTerminalsModule.router);
+    app.use('/webhooks', paymentTerminalsModule.webhookRouter);
+    console.log('✅ Payment Terminals module initialized');
+  }
 }
 
 /**
@@ -171,6 +194,7 @@ export async function createApplication(dataSourceConfig: any): Promise<Express>
         patients: true,
         appointments: true,
         consultations: true,
+        paymentTerminals: true,
       },
     });
   });