diff --git a/homeassistant/components/jellyfin/sensor.py b/homeassistant/components/jellyfin/sensor.py
index b4341d2a190..85c7e9e9ee1 100644
--- a/homeassistant/components/jellyfin/sensor.py
+++ b/homeassistant/components/jellyfin/sensor.py
@@ -17,20 +17,13 @@ from .entity import JellyfinEntity
 from .models import JellyfinData
 
 
-@dataclass(frozen=True)
-class JellyfinSensorEntityDescriptionMixin:
-    """Mixin for required keys."""
+@dataclass(frozen=True, kw_only=True)
+class JellyfinSensorEntityDescription(SensorEntityDescription):
+    """Describes Jellyfin sensor entity."""
 
     value_fn: Callable[[JellyfinDataT], StateType]
 
 
-@dataclass(frozen=True)
-class JellyfinSensorEntityDescription(
-    SensorEntityDescription, JellyfinSensorEntityDescriptionMixin
-):
-    """Describes Jellyfin sensor entity."""
-
-
 def _count_now_playing(data: JellyfinDataT) -> int:
     """Count the number of now playing."""
     session_ids = [