diff --git a/homeassistant/components/cambridge_audio/media_player.py b/homeassistant/components/cambridge_audio/media_player.py
index 5e340cdd21e..805cf8ec7f6 100644
--- a/homeassistant/components/cambridge_audio/media_player.py
+++ b/homeassistant/components/cambridge_audio/media_player.py
@@ -57,6 +57,8 @@ TRANSPORT_FEATURES: dict[TransportControl, MediaPlayerEntityFeature] = {
     TransportControl.STOP: MediaPlayerEntityFeature.STOP,
 }
 
+PARALLEL_UPDATES = 0
+
 
 async def async_setup_entry(
     hass: HomeAssistant,
diff --git a/homeassistant/components/cambridge_audio/select.py b/homeassistant/components/cambridge_audio/select.py
index 5708425cfb0..b1bc0f9e4df 100644
--- a/homeassistant/components/cambridge_audio/select.py
+++ b/homeassistant/components/cambridge_audio/select.py
@@ -14,6 +14,8 @@ from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from .entity import CambridgeAudioEntity, command
 
+PARALLEL_UPDATES = 0
+
 
 @dataclass(frozen=True, kw_only=True)
 class CambridgeAudioSelectEntityDescription(SelectEntityDescription):
diff --git a/homeassistant/components/cambridge_audio/switch.py b/homeassistant/components/cambridge_audio/switch.py
index 19a07682c5b..72aa0d3cbea 100644
--- a/homeassistant/components/cambridge_audio/switch.py
+++ b/homeassistant/components/cambridge_audio/switch.py
@@ -14,6 +14,8 @@ from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from .entity import CambridgeAudioEntity, command
 
+PARALLEL_UPDATES = 0
+
 
 @dataclass(frozen=True, kw_only=True)
 class CambridgeAudioSwitchEntityDescription(SwitchEntityDescription):