diff --git a/include/gdscpp/gdsParser.hpp b/include/gdscpp/gdsParser.hpp
index 3151a19..dc3fdf9 100644
--- a/include/gdscpp/gdsParser.hpp
+++ b/include/gdscpp/gdsParser.hpp
@@ -13,6 +13,7 @@
 #define gdsParser
 
 #include <bitset>
+#include <cstdint>
 #include <cstring>
 #include <fstream>
 #include <iostream>