diff --git a/src/AsteriskAPIManager/api_manager.py b/src/AsteriskAPIManager/api_manager.py
index ce71c2c..121ff4c 100644
--- a/src/AsteriskAPIManager/api_manager.py
+++ b/src/AsteriskAPIManager/api_manager.py
@@ -29,6 +29,7 @@ class AsteriskManagerClient:
         headers = kwargs.get('headers', {})
         if self.token:
             headers['Authorization'] = f'Bearer {self.token}'
+            kwargs['headers'] = headers
         async with aiohttp.ClientSession() as session:
             async with session.request(method, f"{self.base_url}{endpoint}", **kwargs) as response:
                 if response.status >= 400: