diff --git a/homeassistant/components/zwave_js/cover.py b/homeassistant/components/zwave_js/cover.py
index 43b51048de4..4704718c804 100644
--- a/homeassistant/components/zwave_js/cover.py
+++ b/homeassistant/components/zwave_js/cover.py
@@ -129,7 +129,7 @@ class ZWaveCover(ZWaveBaseEntity, CoverEntity):
         if self.info.primary_value.value is None:
             # guard missing value
             return None
-        return round((self.info.primary_value.value / 99) * 100)
+        return round((cast(int, self.info.primary_value.value) / 99) * 100)
 
     async def async_set_cover_position(self, **kwargs: Any) -> None:
         """Move the cover to a specific position."""
diff --git a/homeassistant/components/zwave_js/light.py b/homeassistant/components/zwave_js/light.py
index 6b2fd2c8dbb..94d55dc1a2f 100644
--- a/homeassistant/components/zwave_js/light.py
+++ b/homeassistant/components/zwave_js/light.py
@@ -177,7 +177,7 @@ class ZwaveLight(ZWaveBaseEntity, LightEntity):
         """
         if self.info.primary_value.value is None:
             return None
-        return round((self.info.primary_value.value / 99) * 255)
+        return round((cast(int, self.info.primary_value.value) / 99) * 255)
 
     @property
     def color_mode(self) -> str | None: