diff --git a/phosphor-power-supply/psu_manager.hpp b/phosphor-power-supply/psu_manager.hpp
index 02fff3f..8725ce8 100644
--- a/phosphor-power-supply/psu_manager.hpp
+++ b/phosphor-power-supply/psu_manager.hpp
@@ -361,9 +361,22 @@
     PowerSystemInputs powerSystemInputs;
 
     /**
-     * @brief Implement the org.freedesktop.DBus.ObjectManager interface
+     * @brief Implement the ObjectManager for PowerSystemInputs object.
+     *
+     * Implements the org.freedesktop.DBus.ObjectManager interface used to
+     * communicate updates to the PowerSystemInputs object on the
+     * /xyz/openbmc_project/power/power_supplies root D-Bus path.
      */
     sdbusplus::server::manager_t objectManager;
+
+    /**
+     * @brief Implement the ObjectManager for power supply input history.
+     *
+     * Implements the org.freedesktop.DBus.ObjectManager interface used to
+     * communicate updates to the Average and Maximum interface properties on
+     * the /org/open_power/sensors root D-Bus path.
+     */
+    sdbusplus::server::manager_t historyManager;
 };
 
 } // namespace phosphor::power::manager