diff --git a/phosphor-regulators/src/chassis.hpp b/phosphor-regulators/src/chassis.hpp
index 86d99f8..7462094 100644
--- a/phosphor-regulators/src/chassis.hpp
+++ b/phosphor-regulators/src/chassis.hpp
@@ -86,6 +86,11 @@
     void addToIDMap(IDMap& idMap);
 
     /**
+     * Clear any cached data about hardware devices.
+     */
+    void clearCache();
+
+    /**
      * Close the devices within this chassis, if any.
      *
      * @param services system services like error logging and the journal