diff --git a/finetune_dataset_creator.py b/finetune_dataset_creator.py
index 68ea3dd..9cd2829 100644
--- a/finetune_dataset_creator.py
+++ b/finetune_dataset_creator.py
@@ -99,7 +99,7 @@ class FinetuneDatasetCreator:
         
         with open(self.output_file, 'w', encoding='utf-8') as f:
             # Process each XML file in iterations directory
-            for xml_file in sorted(self.iterations_dir.glob('*.xml')):
+            for xml_file in sorted(self.iterations_dir.rglob('*.xml')):
                 sample = self._parse_iteration_file(xml_file)
                 if sample:
                     json.dump(sample, f, ensure_ascii=False)