diff --git a/src/PSUEvent.hpp b/src/PSUEvent.hpp
index 12fc2ef..3e066cf 100644
--- a/src/PSUEvent.hpp
+++ b/src/PSUEvent.hpp
@@ -18,7 +18,7 @@
 
 #include "Utils.hpp"
 
-#include <boost/asio/io_service.hpp>
+#include <boost/asio/io_context.hpp>
 #include <boost/asio/random_access_file.hpp>
 #include <boost/asio/steady_timer.hpp>
 #include <boost/container/flat_map.hpp>
@@ -36,7 +36,7 @@
     PSUSubEvent(std::shared_ptr<sdbusplus::asio::dbus_interface> eventInterface,
                 const std::string& path,
                 std::shared_ptr<sdbusplus::asio::connection>& conn,
-                boost::asio::io_service& io, const PowerState& powerState,
+                boost::asio::io_context& io, const PowerState& powerState,
                 const std::string& groupEventName, const std::string& eventName,
                 std::shared_ptr<std::set<std::string>> asserts,
                 std::shared_ptr<std::set<std::string>> combineEvent,
@@ -81,7 +81,7 @@
     PSUCombineEvent(
         sdbusplus::asio::object_server& objectServer,
         std::shared_ptr<sdbusplus::asio::connection>& conn,
-        boost::asio::io_service& io, const std::string& psuName,
+        boost::asio::io_context& io, const std::string& psuName,
         const PowerState& powerState,
         boost::container::flat_map<std::string, std::vector<std::string>>&
             eventPathList,