diff --git a/twilio/http/async_http_client.py b/twilio/http/async_http_client.py
index ecd5d4de9..9e07f93d0 100644
--- a/twilio/http/async_http_client.py
+++ b/twilio/http/async_http_client.py
@@ -93,7 +93,9 @@ async def request(
             "timeout": timeout,
             "allow_redirects": allow_redirects,
         }
-
+        if self.proxy_url:
+            kwargs["proxy"] = self.proxy_url
+            
         self.log_request(kwargs)
         self._test_only_last_response = None