diff --git a/protofiles/ConfigReplyMsg.proto b/protofiles/ConfigReplyMsg.proto
index 4ad708d829f9f6..bfca89d55ae52a 100644
--- a/protofiles/ConfigReplyMsg.proto
+++ b/protofiles/ConfigReplyMsg.proto
@@ -16,5 +16,6 @@ message ConfigReply {
    optional ReplyType replyType = 1;
    optional string errorMessage = 2;
    optional ConfigType configType = 3;
-   optional bytes serializedConfigMessage = 4;
+   optional string overrideExtension = 4;
+   optional bytes serializedConfigMessage = 5;
 }
diff --git a/protofiles/ConfigRequestMsg.proto b/protofiles/ConfigRequestMsg.proto
index d4be248dfbf8bf..e445cec2fdfed5 100644
--- a/protofiles/ConfigRequestMsg.proto
+++ b/protofiles/ConfigRequestMsg.proto
@@ -15,5 +15,6 @@ message ConfigRequest {
 
    optional RequestType requestType = 1;
    optional ConfigType configType = 2;
-   optional bytes serializedConfigMessage = 3;
+   optional string override = 3;
+   optional bytes serializedConfigMessage = 4;
 }