diff --git a/controllers/main.py b/controllers/main.py
index 10be326..a51a191 100644
--- a/controllers/main.py
+++ b/controllers/main.py
@@ -30,6 +30,6 @@ class Main(http.Controller):
             'balance_id': balance_id,
             'date': date,
             'transactions': transaction_ids.read(
-                ['qrcode', 'balance_id', 'ean13', 'ean13_verif'])
+                ['qrcode', 'balance_id', 'ean13', 'ean13_verif', 'date_iso'])
             }
         return Response(json.dumps(data), headers=headers)
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