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>>