diff --git a/homeassistant/components/vesync/common.py b/homeassistant/components/vesync/common.py
index 10d718ef50d..5a050e042f0 100644
--- a/homeassistant/components/vesync/common.py
+++ b/homeassistant/components/vesync/common.py
@@ -13,7 +13,7 @@ from pyvesync.devices.vesyncswitch import VeSyncWallSwitch
 _LOGGER = logging.getLogger(__name__)
 
 
-def rgetattr(obj: object, attr: str):
+def rgetattr(obj: object, attr: str) -> object | str | None:
     """Return a string in the form word.1.2.3 and return the item as 3. Note that this last value could be in a dict as well."""
     _this_func = rgetattr
     sp = attr.split(".", 1)
diff --git a/homeassistant/components/vesync/entity.py b/homeassistant/components/vesync/entity.py
index 8ace861eb3f..10868836ee3 100644
--- a/homeassistant/components/vesync/entity.py
+++ b/homeassistant/components/vesync/entity.py
@@ -30,7 +30,7 @@ class VeSyncBaseEntity(CoordinatorEntity[VeSyncDataCoordinator]):
         )
 
     @property
-    def base_unique_id(self):
+    def base_unique_id(self) -> str:
         """Return the ID of this device."""
         # The unique_id property may be overridden in subclasses, such as in
         # sensors. Maintaining base_unique_id allows us to group related