diff --git a/homeassistant/components/nextdns/binary_sensor.py b/homeassistant/components/nextdns/binary_sensor.py
index 1bb79cf4fce..c4ab58537cd 100644
--- a/homeassistant/components/nextdns/binary_sensor.py
+++ b/homeassistant/components/nextdns/binary_sensor.py
@@ -25,20 +25,14 @@ from .coordinator import CoordinatorDataT, NextDnsConnectionUpdateCoordinator
 PARALLEL_UPDATES = 1
 
 
-@dataclass(frozen=True)
-class NextDnsBinarySensorRequiredKeysMixin(Generic[CoordinatorDataT]):
-    """Mixin for required keys."""
-
-    state: Callable[[CoordinatorDataT, str], bool]
-
-
-@dataclass(frozen=True)
+@dataclass(frozen=True, kw_only=True)
 class NextDnsBinarySensorEntityDescription(
-    BinarySensorEntityDescription,
-    NextDnsBinarySensorRequiredKeysMixin[CoordinatorDataT],
+    BinarySensorEntityDescription, Generic[CoordinatorDataT]
 ):
     """NextDNS binary sensor entity description."""
 
+    state: Callable[[CoordinatorDataT, str], bool]
+
 
 SENSORS = (
     NextDnsBinarySensorEntityDescription[ConnectionStatus](
diff --git a/homeassistant/components/nextdns/sensor.py b/homeassistant/components/nextdns/sensor.py
index 3ac2179ed31..a034901aa41 100644
--- a/homeassistant/components/nextdns/sensor.py
+++ b/homeassistant/components/nextdns/sensor.py
@@ -39,22 +39,16 @@ from .coordinator import CoordinatorDataT, NextDnsUpdateCoordinator
 PARALLEL_UPDATES = 1
 
 
-@dataclass(frozen=True)
-class NextDnsSensorRequiredKeysMixin(Generic[CoordinatorDataT]):
-    """Class for NextDNS entity required keys."""
+@dataclass(frozen=True, kw_only=True)
+class NextDnsSensorEntityDescription(
+    SensorEntityDescription, Generic[CoordinatorDataT]
+):
+    """NextDNS sensor entity description."""
 
     coordinator_type: str
     value: Callable[[CoordinatorDataT], StateType]
 
 
-@dataclass(frozen=True)
-class NextDnsSensorEntityDescription(
-    SensorEntityDescription,
-    NextDnsSensorRequiredKeysMixin[CoordinatorDataT],
-):
-    """NextDNS sensor entity description."""
-
-
 SENSORS: tuple[NextDnsSensorEntityDescription, ...] = (
     NextDnsSensorEntityDescription[AnalyticsStatus](
         key="all_queries",
diff --git a/homeassistant/components/nextdns/switch.py b/homeassistant/components/nextdns/switch.py
index dfb796efd8c..a6bbead131e 100644
--- a/homeassistant/components/nextdns/switch.py
+++ b/homeassistant/components/nextdns/switch.py
@@ -24,19 +24,14 @@ from .coordinator import CoordinatorDataT, NextDnsSettingsUpdateCoordinator
 PARALLEL_UPDATES = 1
 
 
-@dataclass(frozen=True)
-class NextDnsSwitchRequiredKeysMixin(Generic[CoordinatorDataT]):
-    """Class for NextDNS entity required keys."""
-
-    state: Callable[[CoordinatorDataT], bool]
-
-
-@dataclass(frozen=True)
+@dataclass(frozen=True, kw_only=True)
 class NextDnsSwitchEntityDescription(
-    SwitchEntityDescription, NextDnsSwitchRequiredKeysMixin[CoordinatorDataT]
+    SwitchEntityDescription, Generic[CoordinatorDataT]
 ):
     """NextDNS switch entity description."""
 
+    state: Callable[[CoordinatorDataT], bool]
+
 
 SWITCHES = (
     NextDnsSwitchEntityDescription[Settings](