diff --git a/api/namex/services/payment/models/__init__.py b/api/namex/services/payment/models/__init__.py
index 5f0298cc4..ebf92f827 100644
--- a/api/namex/services/payment/models/__init__.py
+++ b/api/namex/services/payment/models/__init__.py
@@ -109,6 +109,7 @@ class PaymentInvoice(Serializable):
     lineItems: list = field(default_factory=list)
     receipts: list = field(default_factory=list)
     references: list = field(default_factory=list)
+    details: list = field(default_factory=list)
     _links: list = field(default_factory=list)