diff --git a/backend/condition/parsing/peabody_parser.py b/backend/condition/parsing/peabody_parser.py
index 9a38c790..921f24d4 100644
--- a/backend/condition/parsing/peabody_parser.py
+++ b/backend/condition/parsing/peabody_parser.py
@@ -23,8 +23,9 @@ class PeabodyParser(Parser):
         self,
         file_stream: BinaryIO,
     ) -> Any:
+        file_stream.seek(0)
         logger.info("[PeabodyParser] Loading workbook...")
-        wb: Workbook = load_workbook(file_stream)
+        wb: Workbook = load_workbook(file_stream, read_only=True, data_only=True)
         logger.info("[PeabodyParser] Successfully loaded workbook. Parsing assets...")
         assets = PeabodyParser._parse_assets(wb)
         logger.info(