diff --git a/gen_constants-inl.h b/gen_constants-inl.h
index ea8c701..8efd4f6 100644
--- a/gen_constants-inl.h
+++ b/gen_constants-inl.h
@@ -10,6 +10,7 @@
 #include <stddef.h>
 #include <signal.h>
 #include <sys/mman.h>
-#include <sys/stat.h>
 #include <sys/resource.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
 #include <sys/types.h>