--- ext/libxml/ruby_libxml.h.orig	2022-08-30 11:13:23 UTC
+++ ext/libxml/ruby_libxml.h
@@ -9,6 +9,7 @@
 #include <libxml/debugXML.h>
 #include <libxml/xmlversion.h>
 #include <libxml/xmlmemory.h>
+#include <libxml/xlink.h>
 #include <libxml/xpath.h>
 #include <libxml/valid.h>
 #include <libxml/catalog.h>