diff --git a/lago_python_client/mixins.py b/lago_python_client/mixins.py
index 8c510b5..5c4d7df 100644
--- a/lago_python_client/mixins.py
+++ b/lago_python_client/mixins.py
@@ -1,3 +1,4 @@
+import warnings
 from typing import Any, Generic, Optional, Type, TypeVar, Union
 
 import httpx
@@ -157,9 +158,14 @@ def find_all(
         self: _ClientMixin[_M],
         resource_id: str,
         options: QueryPairs = None,
+        timeout: Optional[httpx.Timeout] = DEFAULT_TIMEOUT,
+        *,
         timetour: Optional[httpx.Timeout] = None,
     ) -> Mapping[str, Any]:
         """Execute `find_all` child command."""
+        if timetour is not None:
+            warnings.warn("timetour is deprecated, use timeout instead", DeprecationWarning, stacklevel=2)
+            timeout = timetour
         # Send request and save response
         if options is None:
             options = {}
@@ -174,6 +180,7 @@ def find_all(
                 query_pairs=options,
             ),
             headers=make_headers(api_key=self.api_key),
+            timeout=timeout,
             rate_limit_retry_config=self.rate_limit_retry_config,
         )
 
diff --git a/tests/test_find_all_children.py b/tests/test_find_all_children.py
index 37b25d7..17f37cf 100644
--- a/tests/test_find_all_children.py
+++ b/tests/test_find_all_children.py
@@ -1,7 +1,9 @@
+import httpx
 import pytest
 from pytest_httpx import HTTPXMock
 
 from lago_python_client.client import Client
+from lago_python_client.mixins import DEFAULT_TIMEOUT
 
 
 @pytest.mark.parametrize(
@@ -38,3 +40,39 @@ def test_find_all_children_sends_authentication_headers(
     assert request.headers["Authorization"] == "Bearer test-api-key"
     assert request.headers["Content-Type"] == "application/json"
     assert response == response_data
+
+
+def mock_invoices_response(httpx_mock: HTTPXMock):
+    httpx_mock.add_response(
+        method="GET",
+        url="https://api.getlago.com/api/v1/customers/parent-id/invoices",
+        json={"invoices": [], "meta": {"current_page": 1}},
+    )
+
+
+def test_find_all_children_uses_default_timeout(httpx_mock: HTTPXMock):
+    client = Client(api_key="test-api-key")
+    mock_invoices_response(httpx_mock)
+
+    client.customer_invoices.find_all(resource_id="parent-id")
+
+    assert httpx_mock.get_request().extensions["timeout"] == DEFAULT_TIMEOUT.as_dict()
+
+
+def test_find_all_children_with_custom_timeout(httpx_mock: HTTPXMock):
+    client = Client(api_key="test-api-key")
+    mock_invoices_response(httpx_mock)
+
+    client.customer_invoices.find_all(resource_id="parent-id", timeout=httpx.Timeout(30.0))
+
+    assert httpx_mock.get_request().extensions["timeout"] == httpx.Timeout(30.0).as_dict()
+
+
+def test_find_all_children_with_deprecated_timetour(httpx_mock: HTTPXMock):
+    client = Client(api_key="test-api-key")
+    mock_invoices_response(httpx_mock)
+
+    with pytest.warns(DeprecationWarning, match="timetour is deprecated"):
+        client.customer_invoices.find_all(resource_id="parent-id", timetour=httpx.Timeout(30.0))
+
+    assert httpx_mock.get_request().extensions["timeout"] == httpx.Timeout(30.0).as_dict()