diff --git a/packages/http/httpx/tests/test_kiota_client_factory.py b/packages/http/httpx/tests/test_kiota_client_factory.py
index eec62d7..62273fb 100644
--- a/packages/http/httpx/tests/test_kiota_client_factory.py
+++ b/packages/http/httpx/tests/test_kiota_client_factory.py
@@ -34,11 +34,11 @@ def test_create_with_default_middleware_custom_client_with_proxy():
     """Test creation of HTTP Client using default middleware while providing
     a custom client"""
     proxies = {
-        "http://": "http://localhost:8030",
-        "https://": "http://localhost:8031",
+        "http://": httpx.HTTPTransport(proxy="http://localhost:8030"),
+        "https://": httpx.HTTPTransport(proxy="http://localhost:8031"),
     }
     timeout = httpx.Timeout(20, connect=10)
-    custom_client = httpx.AsyncClient(timeout=timeout, http2=True, proxies=proxies)
+    custom_client = httpx.AsyncClient(timeout=timeout, http2=True, mounts=proxies)
     client = KiotaClientFactory.create_with_default_middleware(custom_client)
 
     assert isinstance(client, httpx.AsyncClient)
@@ -96,11 +96,11 @@ def test_create_with_custom_middleware_custom_client_with_proxy():
     """Test creation of HTTP Client using custom middleware while providing
     a custom client"""
     proxies = {
-        "http://": "http://localhost:8030",
-        "https://": "http://localhost:8031",
+        "http://": httpx.HTTPTransport(proxy="http://localhost:8030"),
+        "https://": httpx.HTTPTransport(proxy="http://localhost:8031"),
     }
     timeout = httpx.Timeout(20, connect=10)
-    custom_client = httpx.AsyncClient(timeout=timeout, http2=True, proxies=proxies)
+    custom_client = httpx.AsyncClient(timeout=timeout, http2=True, mounts=proxies)
     middleware = [
         RetryHandler(),
     ]