diff --git a/src/openapi/customers/customers-crud-v2.yaml b/src/openapi/customers/customers-crud-v2.yaml
index a242151..322d118 100644
--- a/src/openapi/customers/customers-crud-v2.yaml
+++ b/src/openapi/customers/customers-crud-v2.yaml
@@ -1152,8 +1152,8 @@ paths:
               customerPhone:
                 value:
                   phone:
-                    number: 0701112233
-                    countryCode: 0031
+                    number: "0701112233"
+                    countryCode: "0031"
                     phoneTypeId: 1
                     isPreferred: true
         required: true
@@ -1192,8 +1192,8 @@ paths:
                 value:
                   phone:
                     phoneTypeId: 2
-                    number: 0701112233
-                    countryCode: 0031
+                    number: "0701112233"
+                    countryCode: "0031"
                     isPreferred: false
               updatePhoneTypeId:
                 value: