diff --git a/common/fake_hardware.h b/common/fake_hardware.h
index 5d0fca3..a384597 100644
--- a/common/fake_hardware.h
+++ b/common/fake_hardware.h
@@ -81,6 +81,8 @@
     return false;
   }
 
+  int64_t GetBuildTimestamp() const override { return build_timestamp_; }
+
   // Setters
   void SetIsOfficialBuild(bool is_official_build) {
     is_official_build_ = is_official_build;
@@ -125,6 +127,10 @@
     powerwash_count_ = powerwash_count;
   }
 
+  void SetBuildTimestamp(int64_t build_timestamp) {
+    build_timestamp_ = build_timestamp;
+  }
+
  private:
   bool is_official_build_{true};
   bool is_normal_boot_mode_{true};
@@ -137,6 +143,7 @@
   std::string ec_version_{"Fake EC v1.0a"};
   int powerwash_count_{kPowerwashCountNotSet};
   bool powerwash_scheduled_{false};
+  int64_t build_timestamp_{0};
 
   DISALLOW_COPY_AND_ASSIGN(FakeHardware);
 };