diff --git a/tests/components/nest/test_device_trigger.py b/tests/components/nest/test_device_trigger.py
index 759fb56d213..1820096d2a6 100644
--- a/tests/components/nest/test_device_trigger.py
+++ b/tests/components/nest/test_device_trigger.py
@@ -1,5 +1,7 @@
 """The tests for Nest device triggers."""
 
+from typing import Any
+
 from google_nest_sdm.event import EventMessage
 import pytest
 from pytest_unordered import unordered
@@ -30,7 +32,9 @@ def platforms() -> list[str]:
     return ["camera"]
 
 
-def make_camera(device_id, name=DEVICE_NAME, traits={}):
+def make_camera(
+    device_id, name: str = DEVICE_NAME, *, traits: dict[str, Any]
+) -> dict[str, Any]:
     """Create a nest camera."""
     traits = traits.copy()
     traits.update(
diff --git a/tests/components/nest/test_events.py b/tests/components/nest/test_events.py
index f817378aea1..08cf9f775b7 100644
--- a/tests/components/nest/test_events.py
+++ b/tests/components/nest/test_events.py
@@ -53,7 +53,7 @@ def device_traits() -> list[str]:
 
 @pytest.fixture(autouse=True)
 def device(
-    device_type: str, device_traits: dict[str, Any], create_device: CreateDevice
+    device_type: str, device_traits: list[str], create_device: CreateDevice
 ) -> None:
     """Fixture to create a device under test."""
     return create_device.create(
@@ -70,7 +70,7 @@ def event_view(d: Mapping[str, Any]) -> Mapping[str, Any]:
     return {key: value for key, value in d.items() if key in EVENT_KEYS}
 
 
-def create_device_traits(event_traits=[]):
+def create_device_traits(event_traits: list[str]) -> dict[str, Any]:
     """Create fake traits for a device."""
     result = {
         "sdm.devices.traits.Info": {