diff --git a/packages/http/httpx/pyproject.toml b/packages/http/httpx/pyproject.toml
index 6680f9d..b9b0595 100644
--- a/packages/http/httpx/pyproject.toml
+++ b/packages/http/httpx/pyproject.toml
@@ -29,7 +29,7 @@ python = ">=3.8,<4.0"
 microsoft-kiota-abstractions = {path="../../abstractions/", develop=true}
 opentelemetry-api = ">=1.27.0"
 opentelemetry-sdk = ">=1.27.0"
-httpx = {extras = ["http2"], version = ">=0.23,<0.28"}
+httpx = {extras = ["http2"], version = ">=0.28"}
 urllib3 = "^2.2.2"
 
 [tool.poetry.group.dev.dependencies]
diff --git a/packages/http/httpx/tests/test_httpx_request_adapter.py b/packages/http/httpx/tests/test_httpx_request_adapter.py
index 0e5e0f5..89fdbe8 100644
--- a/packages/http/httpx/tests/test_httpx_request_adapter.py
+++ b/packages/http/httpx/tests/test_httpx_request_adapter.py
@@ -91,7 +91,7 @@ def test_enable_backing_store(request_adapter):
 
 @pytest.mark.asyncio
 async def test_get_root_parse_node(request_adapter, simple_success_response):
-    assert simple_success_response.text == '{"message": "Success!"}'
+    assert simple_success_response.text == '{"message":"Success!"}'
     assert simple_success_response.status_code == 200
     content_type = request_adapter.get_response_content_type(simple_success_response)
     assert content_type == "application/json"
@@ -118,7 +118,7 @@ async def test_get_root_parse_node_no_content_type_header_return_null(
 @pytest.mark.asyncio
 async def test_does_not_throw_failed_responses_on_success(request_adapter, simple_success_response):
     try:
-        assert simple_success_response.text == '{"message": "Success!"}'
+        assert simple_success_response.text == '{"message":"Success!"}'
         assert simple_success_response.status_code == 200
         content_type = request_adapter.get_response_content_type(simple_success_response)
         assert content_type == "application/json"
@@ -130,7 +130,7 @@ async def test_does_not_throw_failed_responses_on_success(request_adapter, simpl
 async def test_throw_failed_responses_null_error_map(
     request_adapter, simple_error_response, mock_otel_span
 ):
-    assert simple_error_response.text == '{"error": "not found"}'
+    assert simple_error_response.text == '{"error":"not found"}'
     assert simple_error_response.status_code == 404
     content_type = request_adapter.get_response_content_type(simple_error_response)
     assert content_type == "application/json"
@@ -149,7 +149,7 @@ async def test_throw_failed_responses_null_error_map(
 async def test_throw_failed_responses_no_error_class(
     request_adapter, simple_error_response, mock_error_500_map, mock_otel_span
 ):
-    assert simple_error_response.text == '{"error": "not found"}'
+    assert simple_error_response.text == '{"error":"not found"}'
     assert simple_error_response.status_code == 404
     content_type = request_adapter.get_response_content_type(simple_error_response)
     assert content_type == "application/json"
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(),
     ]