diff --git a/pyscicat/model.py b/pyscicat/model.py
index 1fd2723..acfe2ee 100644
--- a/pyscicat/model.py
+++ b/pyscicat/model.py
@@ -73,6 +73,10 @@ class Sample(Ownable):
     description: Optional[str] = None
     sampleCharacteristics: Optional[dict] = None
     isPublished: bool = False
+    datasetsId: Optional[str]
+    datasetId: Optional[str]
+    rawDatasetId: Optional[str]
+    derivedDatasetId: Optional[str]
 
 
 class Job(MongoQueryable):