diff --git a/cloud/storage/core/tools/common/go/configurator/kikimr-proto/auth.proto b/cloud/storage/core/tools/common/go/configurator/kikimr-proto/auth.proto
index 228bb374d29..74a86d956b2 100644
--- a/cloud/storage/core/tools/common/go/configurator/kikimr-proto/auth.proto
+++ b/cloud/storage/core/tools/common/go/configurator/kikimr-proto/auth.proto
@@ -10,4 +10,5 @@ message TAuthConfig {
     optional bool UseStaff = 5;
     optional bool UseUserAccountService = 6;
     optional string PathToRootCA = 7;
+    optional string AccessServiceType = 8;
 }