diff --git a/backend/app/services/task.py b/backend/app/services/task.py
index 6a5884a..c7847f9 100644
--- a/backend/app/services/task.py
+++ b/backend/app/services/task.py
@@ -44,7 +44,10 @@ async def _emit(task_id: str, message: str, level: str = "info") -> None:
 async def _resolve_scope(scope: dict) -> list[tuple[Device, Object]]:
     """Expand target_scope to a list of (device, parent_object) pairs."""
     async with AsyncSessionLocal() as db:
-        query = select(Device).options(selectinload(Device.object)).where(Device.is_active == True)
+        query = select(Device).options(
+            selectinload(Device.object).selectinload(Object.ssh_credentials),
+            selectinload(Device.object).selectinload(Object.category_credentials),
+        ).where(Device.is_active == True)
 
         scope_type = scope.get("type")
         if scope_type == "device":