diff --git a/README.md b/README.md
index cae9b78b655abe3bf02f603e25441b1123ed2b26..01c8ad4fdff7cd80bd60cd0c317846b2cb84ca28 100644
--- a/README.md
+++ b/README.md
@@ -41,3 +41,5 @@ all of the endpoints are in /service
 - getSpecifiedVouchers -> get the specified voucher usage
 - getAllVouchers -> get all voucher usage
 
+for more information about the endpoints, you can check the wsdl file in /service?wsdl
+