diff --git a/src/entt/entity/entity.hpp b/src/entt/entity/entity.hpp
index 48123d6d3..6847b8e69 100644
--- a/src/entt/entity/entity.hpp
+++ b/src/entt/entity/entity.hpp
@@ -2,6 +2,7 @@
 #define ENTT_ENTITY_ENTITY_HPP
 
 
+#include <cstdint>
 #include "../config/config.h"