diff --git a/include/Thresholds.hpp b/include/Thresholds.hpp
index 41eef94..ca2b0a0 100644
--- a/include/Thresholds.hpp
+++ b/include/Thresholds.hpp
@@ -1,6 +1,7 @@
 #pragma once
 #include "Utils.hpp"
 
+#include <boost/asio/deadline_timer.hpp>
 #include <boost/asio/io_service.hpp>
 #include <nlohmann/json.hpp>