diff --git a/buffet/manager.cc b/buffet/manager.cc
index d82faf6..bc9fdf8 100644
--- a/buffet/manager.cc
+++ b/buffet/manager.cc
@@ -126,7 +126,10 @@
 void Manager::HandleUpdateState(
     chromeos::ErrorPtr* error,
     const chromeos::VariantDictionary& property_set) {
-  state_manager_->UpdateProperties(property_set, error);
+  base::Time timestamp = base::Time::Now();
+  for (const auto& pair : property_set) {
+    state_manager_->SetPropertyValue(pair.first, pair.second, timestamp, error);
+  }
 }
 
 void Manager::HandleAddCommand(