diff --git a/maps_extended.proto b/maps_extended.proto
index ac0c5b9..fbb406b 100644
--- a/maps_extended.proto
+++ b/maps_extended.proto
@@ -11,6 +11,7 @@ service MapsService {
   rpc Create(MapCreate) returns (MapId);
   rpc Delete(MapId) returns (NullResponse);
   rpc List(ListRequest) returns (MapList);
+  rpc IncrementLoadCount(MapId) returns (NullResponse);
 }
 
 message MapIdList { repeated int64 ID = 1; }