diff --git a/docs/core/platform/significant_change.md b/docs/core/platform/significant_change.md
index 2e38a30a..404017bf 100644
--- a/docs/core/platform/significant_change.md
+++ b/docs/core/platform/significant_change.md
@@ -8,7 +8,7 @@ This support is added by creating a `significant_change.py` platform file with a
 
 ```python
 from typing import Any, Optional
-from homeassistant.core import callback
+from homeassistant.core import HomeAssistant, callback
 
 @callback
 def async_check_significant_change(
@@ -18,7 +18,7 @@ def async_check_significant_change(
     new_state: str,
     new_attrs: dict,
     **kwargs: Any,
-) -> Optional[bool]
+) -> bool | None:
 ```
 
 This function is passed a state that was previously considered significant and the new state. It is not just passing the last 2 known states in. The function should return a boolean if it is significant or not, or `None` if the function doesn't know.