diff --git a/mods/randomizer/generator/utility/string.hpp b/mods/randomizer/generator/utility/string.hpp
index 68863105ca..42556f995c 100644
--- a/mods/randomizer/generator/utility/string.hpp
+++ b/mods/randomizer/generator/utility/string.hpp
@@ -11,6 +11,7 @@
 #include <cstring>
 #include <limits>
 #include <optional>
+#include <cstdint>
 
 namespace randomizer::utility::str {
     std::string toUTF8(const std::u16string& str);