diff --git a/getmyinvoices/client.py b/getmyinvoices/client.py
index cdd5ea8..dee5cd5 100644
--- a/getmyinvoices/client.py
+++ b/getmyinvoices/client.py
@@ -88,6 +88,7 @@ def upload_new_document(self,
                             document_due_date=None,
                             payment_method=None,
                             payment_status=None,
+                            paid_at=None,
                             net_amount=None,
                             gross_amount=None,
                             currency=None,
@@ -109,6 +110,7 @@ def upload_new_document(self,
         self._optional(payload, "document_date", document_date)
         self._optional(payload, "payment_method", payment_method)
         self._optional(payload, "payment_status", payment_status)
+        self._optional(payload, "paid_at", paid_at)
         self._optional(payload, "gross_amount", gross_amount)
         self._optional(payload, "net_amount", net_amount)
         self._optional(payload, "currency", currency)
@@ -133,6 +135,7 @@ def update_document(self,
                         document_due_date=None,
                         payment_method=None,
                         payment_status=None,
+                        paid_at=None,
                         net_amount=None,
                         gross_amount=None,
                         currency=None,
@@ -152,6 +155,7 @@ def update_document(self,
         self._optional(payload, "document_due_date", document_due_date)
         self._optional(payload, "payment_method", payment_method)
         self._optional(payload, "payment_status", payment_status)
+        self._optional(payload, "paid_at", paid_at)
         self._optional(payload, "net_amount", net_amount)
         self._optional(payload, "gross_amount", gross_amount)
         self._optional(payload, "vat", vat)
@@ -166,6 +170,11 @@ def update_document(self,
         response = self._post(payload, "/updateDocument")
         return json.loads(response.data)
 
+    def delete_document(self, document_prim_uid):
+        payload = {"document_prim_uid": document_prim_uid}
+        response = self._post(payload, "/deleteDocument")
+        return json.loads(response.data)
+
     def get_countries(self):
         response = self._post({}, "/getCountries")
         return json.loads(response.data)