diff --git a/homeassistant/components/lutron_caseta/models.py b/homeassistant/components/lutron_caseta/models.py
index d35b5d5d2ff..7c3e9831e4b 100644
--- a/homeassistant/components/lutron_caseta/models.py
+++ b/homeassistant/components/lutron_caseta/models.py
@@ -51,7 +51,7 @@ class LutronCasetaButtonEventData(TypedDict):
 
     serial: str
     type: str
-    button_number: int
+    button_number: int | None
     leap_button_number: int
     device_name: str
     device_id: str