diff --git a/src/fan/PresenceGpio.hpp b/src/fan/PresenceGpio.hpp
index 627270b..ac42638 100644
--- a/src/fan/PresenceGpio.hpp
+++ b/src/fan/PresenceGpio.hpp
@@ -1,10 +1,14 @@
 #pragma once
 
-#include "sensor.hpp"
-
+#include <boost/asio/io_context.hpp>
+#include <boost/asio/posix/stream_descriptor.hpp>
+#include <boost/asio/steady_timer.hpp>
 #include <gpiod.hpp>
 #include <phosphor-logging/lg2.hpp>
 
+#include <memory>
+#include <string>
+
 class PresenceGpio
 {
   public: