diff --git a/src/odr/document_cursor.hpp b/src/odr/document_cursor.hpp
index 6f874631..1bc0027d 100644
--- a/src/odr/document_cursor.hpp
+++ b/src/odr/document_cursor.hpp
@@ -1,6 +1,7 @@
 #ifndef ODR_DOCUMENT_CURSOR_H
 #define ODR_DOCUMENT_CURSOR_H
 
+#include <cstdint>
 #include <functional>
 #include <memory>
 #include <string>