diff -up ./src/plugins/litehtml_viewer/litehtml/os_types.h.orig ./src/plugins/litehtml_viewer/litehtml/os_types.h
--- ./src/plugins/litehtml_viewer/litehtml/os_types.h.orig	2023-08-09 16:55:51.309999999 -0600
+++ ./src/plugins/litehtml_viewer/litehtml/os_types.h	2023-08-09 16:56:35.029999999 -0600
@@ -1,6 +1,8 @@
 #ifndef LH_OS_TYPES_H
 #define LH_OS_TYPES_H
 
+#include <cstdint>
+
 namespace litehtml
 {
 #if defined( WIN32 ) || defined( _WIN32 ) || defined( WINCE )