diff --git a/cognee/api/v1/datasets/routers/get_datasets_router.py b/cognee/api/v1/datasets/routers/get_datasets_router.py
index c1cb26e85..f27c6c2ad 100644
--- a/cognee/api/v1/datasets/routers/get_datasets_router.py
+++ b/cognee/api/v1/datasets/routers/get_datasets_router.py
@@ -22,14 +22,14 @@ class DatasetDTO(OutDTO):
     id: UUID
     name: str
     created_at: datetime
-    updated_at: Optional[datetime]
+    updated_at: Optional[datetime] = None
     owner_id: UUID
 
 class DataDTO(OutDTO):
     id: UUID
     name: str
     created_at: datetime
-    updated_at: Optional[datetime]
+    updated_at: Optional[datetime] = None
     extension: str
     mime_type: str
     raw_data_location: str