diff --git a/docsfera.json b/docsfera.json
index 8a386a4..0701ee4 100644
--- a/docsfera.json
+++ b/docsfera.json
@@ -3287,7 +3287,7 @@
       }
     },
     "info": {
-      "title": "Maestro - feat/upload-csv",
+      "title": "Maestro - feat/update-connection",
       "description": "Documentation for Maestro gateway",
       "version": "1.0.0",
       "contact": {}
diff --git a/src/modules/auth/auth.controller.ts b/src/modules/auth/auth.controller.ts
index 4c2fbf9..2c85de5 100644
--- a/src/modules/auth/auth.controller.ts
+++ b/src/modules/auth/auth.controller.ts
@@ -32,6 +32,7 @@ import { GrpcToHttpExceptionFilter } from '../../error/grpc-to-http-exception.fi
 import { RequestUser, User } from 'src/authentication/user.decorator';
 import { Metadata } from '@grpc/grpc-js';
 import { AuthSignInReq, AuthSignInRes } from './dtos/login';
+import { PackTheMetadata } from 'src/utils/ PackTheMetadata';
 
 @ApiTags('Auth')
 @UseFilters(new GrpcToHttpExceptionFilter())
@@ -82,9 +83,11 @@ export class AuthController {
     @User() user: RequestUser,
   ) {
     this.logger.info('/auth - RefreshAccessToken');
-    const metadata = new Metadata();
-    metadata.add('language', language || 'pt-br');
-    metadata.add('customer_name', user.customer_name);
+
+    const metadata = PackTheMetadata({
+      customer_name: user.customer_name,
+      language,
+    });
 
     return this.authClient.refreshAccessToken({ refreshToken }, metadata);
   }