diff --git a/homeassistant/components/modbus/const.py b/homeassistant/components/modbus/const.py
index 2dab84c5909..27212bae555 100644
--- a/homeassistant/components/modbus/const.py
+++ b/homeassistant/components/modbus/const.py
@@ -1,6 +1,6 @@
 """Constants used in modbus integration."""
 
-from enum import Enum
+from enum import StrEnum
 import logging
 
 from homeassistant.const import (
@@ -116,7 +116,7 @@ ATTR_SLAVE = "slave"
 ATTR_VALUE = "value"
 
 
-class DataType(str, Enum):
+class DataType(StrEnum):
     """Data types used by sensor etc."""
 
     CUSTOM = "custom"