diff --git a/src/djinterop/impl/database_impl.hpp b/src/djinterop/impl/database_impl.hpp
index dd6f7a1..48d578a 100644
--- a/src/djinterop/impl/database_impl.hpp
+++ b/src/djinterop/impl/database_impl.hpp
@@ -17,6 +17,7 @@
 
 #pragma once
 
+#include <cstdint>
 #include <optional>
 #include <string>
 #include <vector>