diff --git a/src/ExternalSensorMain.cpp b/src/ExternalSensorMain.cpp
index aa1e6b8..627a4f6 100644
--- a/src/ExternalSensorMain.cpp
+++ b/src/ExternalSensorMain.cpp
@@ -337,7 +337,7 @@
         std::cerr << "ExternalSensor service starting up\n";
     }
 
-    boost::asio::io_service io;
+    boost::asio::io_context io;
     auto systemBus = std::make_shared<sdbusplus::asio::connection>(io);
     sdbusplus::asio::object_server objectServer(systemBus, true);