diff --git a/src/Core/fig_string.hpp b/src/Core/fig_string.hpp
index 8c75acd..1d74a86 100644
--- a/src/Core/fig_string.hpp
+++ b/src/Core/fig_string.hpp
@@ -1,6 +1,7 @@
 #pragma once
 #include <string>
 #include <string_view>
+#include <cstdint>
 
 namespace Fig
 {