diff --git a/packages/services/agent-service/src/main.ts b/packages/services/agent-service/src/main.ts
index f7c1f32..dbefd12 100644
--- a/packages/services/agent-service/src/main.ts
+++ b/packages/services/agent-service/src/main.ts
@@ -1,8 +1,8 @@
 import { NestFactory } from '@nestjs/core';
 import { Logger } from '@nestjs/common';
 import { ConfigService } from '@nestjs/config';
+import { NestExpressApplication } from '@nestjs/platform-express';
 import { WsAdapter } from '@nestjs/platform-ws';
-import * as express from 'express';
 import { AgentModule } from './agent.module';
 
 const logger = new Logger('AgentService');
@@ -16,9 +16,9 @@ process.on('uncaughtException', (error) => {
 });
 
 async function bootstrap() {
-  const app = await NestFactory.create(AgentModule);
-  // Increase body parser limit for base64 image attachments
-  app.use(express.json({ limit: '10mb' }));
+  const app = await NestFactory.create<NestExpressApplication>(AgentModule);
+  // Increase body parser limit for base64 image attachments (default 100KB is too small)
+  app.useBodyParser('json', { limit: '10mb' });
   // Use raw WebSocket adapter instead of Socket.IO
   app.useWebSocketAdapter(new WsAdapter(app));
   const config = app.get(ConfigService);