diff --git a/include/CPUSensor.hpp b/include/CPUSensor.hpp
index 0bcf3ed..e76ec89 100644
--- a/include/CPUSensor.hpp
+++ b/include/CPUSensor.hpp
@@ -48,6 +48,10 @@
     void setupRead(void);
     void handleResponse(const boost::system::error_code& err);
     void checkThresholds(void) override;
+    void updateMinMaxValues(void);
+    bool areDifferent(const double& lVal, const double& rVal);
+    void genericUpdateValue(double& oldValue, const double& newValue,
+                            const char* dbusParamName);
 };
 
 extern boost::container::flat_map<std::string, std::unique_ptr<CPUSensor>>
diff --git a/include/Thresholds.hpp b/include/Thresholds.hpp
index fe27474..56bb541 100644
--- a/include/Thresholds.hpp
+++ b/include/Thresholds.hpp
@@ -131,6 +131,8 @@
 // This function returns optionally these 3 elements as a tuple.
 std::optional<std::tuple<std::string, std::string, std::string>>
     splitFileName(const std::filesystem::path& filePath);
+std::optional<double> readFile(const std::string& thresholdFile,
+                               const double& scaleFactor);
 
 bool parseThresholdsFromConfig(
     const SensorData& sensorData,