diff --git a/services/autoscaling/tests/unit/conftest.py b/services/autoscaling/tests/unit/conftest.py
index c0d89ff995a..eccee9967b5 100644
--- a/services/autoscaling/tests/unit/conftest.py
+++ b/services/autoscaling/tests/unit/conftest.py
@@ -419,7 +419,7 @@ def service_monitored_labels(
 @pytest.fixture
 async def async_client(initialized_app: FastAPI) -> AsyncIterator[httpx.AsyncClient]:
     async with httpx.AsyncClient(
-        app=initialized_app,
+        transport=httpx.ASGITransport(app=initialized_app),
         base_url=f"http://{initialized_app.title}.testserver.io",
         headers={"Content-Type": "application/json"},
     ) as client:
diff --git a/services/clusters-keeper/tests/unit/conftest.py b/services/clusters-keeper/tests/unit/conftest.py
index 432d743fb0c..890968f4d83 100644
--- a/services/clusters-keeper/tests/unit/conftest.py
+++ b/services/clusters-keeper/tests/unit/conftest.py
@@ -262,7 +262,7 @@ def app_settings(initialized_app: FastAPI) -> ApplicationSettings:
 @pytest.fixture
 async def async_client(initialized_app: FastAPI) -> AsyncIterator[httpx.AsyncClient]:
     async with httpx.AsyncClient(
-        app=initialized_app,
+        transport=httpx.ASGITransport(app=initialized_app),
         base_url=f"http://{initialized_app.title}.testserver.io",
         headers={"Content-Type": "application/json"},
     ) as client: