diff --git a/homeassistant/components/shelly/update.py b/homeassistant/components/shelly/update.py
index 63972e9456d..fa37b394b6c 100644
--- a/homeassistant/components/shelly/update.py
+++ b/homeassistant/components/shelly/update.py
@@ -163,7 +163,7 @@ class RestUpdateEntity(ShellyRestAttributeEntity, UpdateEntity):
         new_version = self.entity_description.latest_version(
             self.wrapper.device.status,
         )
-        if new_version is not None:
+        if new_version not in (None, ""):
             return cast(str, new_version)
 
         return self.installed_version