diff --git a/posix/interface.hpp b/posix/interface.hpp
index 369a8229..3c2f2afe 100644
--- a/posix/interface.hpp
+++ b/posix/interface.hpp
@@ -10,6 +10,8 @@
 
 #include "except.hpp"
 
+#include <utility>
+
 #include <sys/types.h>
 #include <ifaddrs.h>