diff --git a/ingestify/domain/models/dataset/selector.py b/ingestify/domain/models/dataset/selector.py
index 0995577..1d96226 100644
--- a/ingestify/domain/models/dataset/selector.py
+++ b/ingestify/domain/models/dataset/selector.py
@@ -33,5 +33,5 @@ def custom_attributes(self):
         return {
             k: v
             for k, v in self.items()
-            if k not in ('_matcher', '_data_spec_versions')
+            if k not in ("_matcher", "_data_spec_versions")
         }