diff --git a/docs/development_testing.md b/docs/development_testing.md
index a8154434..89b63502 100644
--- a/docs/development_testing.md
+++ b/docs/development_testing.md
@@ -135,6 +135,10 @@ This is a snapshot test that asserts the output of an entity state:
 
 ```python
 # tests/components/example/test_sensor.py
+from homeassistant.core import HomeAssistant
+from syrupy.assertion import SnapshotAssertion
+
+
 async def test_sensor(
     hass: HomeAssistant,
     snapshot: SnapshotAssertion,