diff --git a/esphome/components/shelly_dimmer/light.py b/esphome/components/shelly_dimmer/light.py
index c166076e0f..74b57e7ef7 100644
--- a/esphome/components/shelly_dimmer/light.py
+++ b/esphome/components/shelly_dimmer/light.py
@@ -175,7 +175,7 @@ def validate_sha256(value: Any) -> str:
     return value
 
 
-def validate_version(value: str) -> str:
+def validate_version(value: Any) -> str:
     parse_firmware_version(value)
     return value