diff --git a/src/main/protobuf/failure_details.proto b/src/main/protobuf/failure_details.proto
index 90475a9..9fbbd36 100644
--- a/src/main/protobuf/failure_details.proto
+++ b/src/main/protobuf/failure_details.proto
@@ -93,6 +93,7 @@
   }
 
   reserved 102; // For internal use
+  reserved 105; // For internal use
 }
 
 message Interrupted {
@@ -127,4 +128,4 @@
   }
   Code code = 1;
   // Additional data could include the build progress upload endpoint.
-}
\ No newline at end of file
+}