diff --git a/include/ki/pclass/Casters.h b/include/ki/pclass/Casters.h
index 28cc6eb..d171ad3 100644
--- a/include/ki/pclass/Casters.h
+++ b/include/ki/pclass/Casters.h
@@ -2,6 +2,7 @@
 #include <type_traits>
 #include <sstream>
 #include <json.hpp>
+#include "ki/util/BitTypes.h"
 #include "ki/pclass/Value.h"
 #include "ki/pclass/types/EnumType.h"