diff --git a/update_attempter_mock.h b/update_attempter_mock.h
index 16c0e11..21fa4a3 100644
--- a/update_attempter_mock.h
+++ b/update_attempter_mock.h
@@ -17,9 +17,10 @@
   explicit UpdateAttempterMock(MockDbusGlib* dbus)
       : UpdateAttempter(NULL, NULL, dbus) {}
 
-  MOCK_METHOD3(Update, void(const std::string& app_version,
+  MOCK_METHOD4(Update, void(const std::string& app_version,
                             const std::string& omaha_url,
-                            bool obey_proxies));
+                            bool obey_proxies,
+                            bool interactive));
 };
 
 }  // namespace chromeos_update_engine