diff --git a/src/data/add_metadata.py b/src/data/add_metadata.py
index b910961..d06bc63 100644
--- a/src/data/add_metadata.py
+++ b/src/data/add_metadata.py
@@ -36,7 +36,8 @@ def base_document_to_gst_document(
     ]
     new_metadata_dict["validation_status"] = "validated"
     new_metadata_dict["version"] = new_metadata_dict.pop("Document Role")
-    new_metadata_dict["date"] = new_metadata_dict.pop("Date")
+    # convert date fro dd/mm/yyyy to yyyy-mm-dd
+    new_metadata_dict["date"] = "-".join(new_metadata_dict.pop("Date").split("/")[::-1])
     new_metadata_dict["link"] = new_metadata_dict.get("Documents")
     new_metadata_dict["document_variant"] = new_metadata_dict.pop("Document Variant")
     new_metadata_dict["author_is_party"] = new_metadata_dict["Author Type"] == "Party"