diff --git a/cmds/dumpstate/dumpstate.h b/cmds/dumpstate/dumpstate.h
index 9124f94..3d3d7ed 100644
--- a/cmds/dumpstate/dumpstate.h
+++ b/cmds/dumpstate/dumpstate.h
@@ -390,6 +390,13 @@
     // Whether progress updates should be published.
     bool update_progress_ = false;
 
+    // How frequently the progess should be updated;the listener will only be notificated when the
+    // delta from the previous update is more than the threshold.
+    int32_t update_progress_threshold_ = 100;
+
+    // Last progress that triggered a listener updated
+    int32_t last_updated_progress_;
+
     // Whether it should take an screenshot earlier in the process.
     bool do_early_screenshot_ = false;