--- thunderbird-115.0/comm/third_party/rnp/src/libsexp/include/sexp/sexp-error.h.orig	2023-07-11 16:38:40.000000000 +0200
+++ thunderbird-115.0/comm/third_party/rnp/src/libsexp/include/sexp/sexp-error.h	2023-07-12 01:33:34.562045344 +0200
@@ -29,6 +29,7 @@
 
 #pragma once
 
+#include <cstdint>
 #include <exception>
 #include <iostream>
 #include <string>