diff --git a/homeassistant/components/isy994/cover.py b/homeassistant/components/isy994/cover.py
index 7c82ea2459a..60027a31c89 100644
--- a/homeassistant/components/isy994/cover.py
+++ b/homeassistant/components/isy994/cover.py
@@ -1,7 +1,7 @@
 """Support for ISY994 covers."""
 from __future__ import annotations
 
-from typing import Any
+from typing import Any, cast
 
 from pyisy.constants import ISY_VALUE_UNKNOWN
 
@@ -58,7 +58,7 @@ class ISYCoverEntity(ISYNodeEntity, CoverEntity):
         if self._node.status == ISY_VALUE_UNKNOWN:
             return None
         if self._node.uom == UOM_8_BIT_RANGE:
-            return round(self._node.status * 100.0 / 255.0)
+            return round(cast(float, self._node.status) * 100.0 / 255.0)
         return int(sorted((0, self._node.status, 100))[1])
 
     @property
diff --git a/homeassistant/components/isy994/light.py b/homeassistant/components/isy994/light.py
index 4606ef7e8de..6e67ed32938 100644
--- a/homeassistant/components/isy994/light.py
+++ b/homeassistant/components/isy994/light.py
@@ -1,7 +1,7 @@
 """Support for ISY994 lights."""
 from __future__ import annotations
 
-from typing import Any
+from typing import Any, cast
 
 from pyisy.constants import ISY_VALUE_UNKNOWN
 from pyisy.helpers import NodeProperty
@@ -70,7 +70,7 @@ class ISYLightEntity(ISYNodeEntity, LightEntity, RestoreEntity):
             return None
         # Special Case for ISY Z-Wave Devices using % instead of 0-255:
         if self._node.uom == UOM_PERCENTAGE:
-            return round(self._node.status * 255.0 / 100.0)
+            return round(cast(float, self._node.status) * 255.0 / 100.0)
         return int(self._node.status)
 
     async def async_turn_off(self, **kwargs: Any) -> None: