diff --git a/selutility.hpp b/selutility.hpp
index 5262d82..4e2855a 100644
--- a/selutility.hpp
+++ b/selutility.hpp
@@ -2,6 +2,7 @@
 
 #include "types.hpp"
 
+#include <chrono>
 #include <cstdint>
 #include <sdbusplus/server.hpp>