--- libserial-1.0.0/src/libserial/SerialPortConstants.h
+++ libserial-1.0.0/src/libserial/SerialPortConstants.h
@@ -33,6 +33,7 @@
 
 #pragma once
 
+#include <cstdint>
 #include <limits>
 #include <stdexcept>
 #include <string>