diff --git a/test/updater_mock.hpp b/test/updater_mock.hpp
index 732df31..561deaa 100644
--- a/test/updater_mock.hpp
+++ b/test/updater_mock.hpp
@@ -13,4 +13,5 @@
     MOCK_METHOD1(start, bool(uint32_t));
     MOCK_METHOD2(flashData, bool(uint32_t, const std::vector<uint8_t>&));
     MOCK_METHOD0(flashFinish, bool());
+    MOCK_METHOD1(startHash, bool(uint32_t));
 };