diff --git a/src/etc/schema.graphqls b/src/etc/schema.graphqls
index c2334e3..a785c42 100755
--- a/src/etc/schema.graphqls
+++ b/src/etc/schema.graphqls
@@ -357,3 +357,7 @@ type AppliedTaxItemRate {
     percent: Float
     title: String
 }
+
+extend input CartAddressInput {
+    vat_id: String
+}