diff --git a/clearml/datasets/dataset.py b/clearml/datasets/dataset.py
index a8de4c00..5f38868b 100644
--- a/clearml/datasets/dataset.py
+++ b/clearml/datasets/dataset.py
@@ -28,7 +28,7 @@ except ImportError:
 
 
 @attrs
-class FileEntry:
+class FileEntry(object):
     relative_path = attrib(default=None, type=str)
     hash = attrib(default=None, type=str)
     parent_dataset_id = attrib(default=None, type=str)