diff --git a/src/metric.hpp b/src/metric.hpp
index 1ff5bc2..859315e 100644
--- a/src/metric.hpp
+++ b/src/metric.hpp
@@ -19,8 +19,9 @@
     void initialize() override;
     void deinitialize() override;
     std::vector<MetricValue> getReadings() const override;
-    void sensorUpdated(interfaces::Sensor&, uint64_t) override;
-    void sensorUpdated(interfaces::Sensor&, uint64_t, double value) override;
+    void sensorUpdated(interfaces::Sensor&, Milliseconds) override;
+    void sensorUpdated(interfaces::Sensor&, Milliseconds,
+                       double value) override;
     LabeledMetricParameters dumpConfiguration() const override;
     uint64_t sensorCount() const override;