diff --git a/maps.proto b/maps.proto
index 123b76a..d670692 100644
--- a/maps.proto
+++ b/maps.proto
@@ -31,6 +31,7 @@ message MapResponse {
   int64 UpdatedAt = 7;
   int64 Submitter = 8;
   int64 Thumbnail = 9;
+  int64 AssetVersion = 10;
 }
 
 message MapRequest {