diff --git a/cyrus-imapd.spec b/cyrus-imapd.spec
index 744976c..63a5d2d 100644
--- a/cyrus-imapd.spec
+++ b/cyrus-imapd.spec
@@ -81,6 +81,9 @@ Patch5: patch-cyrus-rename-imtest
 # Port to pcre2posix instead of the deprecated pcreposix
 # https://github.com/cyrusimap/cyrus-imapd/pull/4736
 Patch6: patch-cyrus-pcre2
+# Fix build with libxml2 2.12.0
+# https://github.com/cyrusimap/cyrus-imapd/pull/4745
+Patch7: patch-cyrus-libxml212
 
 BuildRequires: autoconf automake bison flex gcc gcc-c++ git glibc-langpack-en
 BuildRequires: groff libtool make pkgconfig rsync systemd transfig
@@ -820,6 +823,7 @@ exclude+=("!Master.maxforkrate")
 %changelog
 * Thu Nov 16 2023 Yaakov Selkowitz <yselkowi@redhat.com> - 3.8.1-3
 - Use pcre2posix instead of the deprecated pcreposix (rhbz#2128286)
+- Fix build with libxml2 2.12.0 (rhbz#2251888)
 
 * Mon Oct 02 2023 Martin Osvald <mosvald@redhat.com> - 3.8.1-2
 - SPDX migration
diff --git a/patch-cyrus-libxml212 b/patch-cyrus-libxml212
new file mode 100644
index 0000000..9832366
--- /dev/null
+++ b/patch-cyrus-libxml212
@@ -0,0 +1,89 @@
+From 37ceb82f0641b03d25d9a158423abbb270fe3867 Mon Sep 17 00:00:00 2001
+From: David King <amigadave@amigadave.com>
+Date: Mon, 27 Nov 2023 10:34:40 +0000
+Subject: [PATCH] Add libxml/parser.h include
+
+This is required for libxml2 2.12.0 and above.
+---
+ imap/ctl_zoneinfo.c     | 1 +
+ imap/http_dav.c         | 1 +
+ imap/http_dav_sharing.c | 2 ++
+ imap/http_ischedule.c   | 2 ++
+ imap/vcard_support.c    | 1 +
+ imap/xcal.c             | 1 +
+ 6 files changed, 8 insertions(+)
+
+diff --git a/imap/ctl_zoneinfo.c b/imap/ctl_zoneinfo.c
+index 76e3cfdd17..f42cff3131 100644
+--- a/imap/ctl_zoneinfo.c
++++ b/imap/ctl_zoneinfo.c
+@@ -57,6 +57,7 @@
+ #include <sys/types.h>
+ 
+ #include <libical/ical.h>
++#include <libxml/parser.h>
+ #include <libxml/tree.h>
+ 
+ #include "annotate.h" /* for strlist functionality */
+diff --git a/imap/http_dav.c b/imap/http_dav.c
+index efa817a192..581b80e573 100644
+--- a/imap/http_dav.c
++++ b/imap/http_dav.c
+@@ -93,6 +93,7 @@
+ #include "imap/imap_err.h"
+ 
+ #include <errno.h>
++#include <libxml/parser.h>
+ #include <libxml/uri.h>
+ 
+ static const struct dav_namespace_t {
+diff --git a/imap/http_dav_sharing.c b/imap/http_dav_sharing.c
+index 5fff46eba4..26fe7f4e6a 100644
+--- a/imap/http_dav_sharing.c
++++ b/imap/http_dav_sharing.c
+@@ -59,6 +59,8 @@
+ #include "imap/http_err.h"
+ #include "imap/imap_err.h"
+ 
++#include <libxml/parser.h>
++
+ #define DAVNOTIFICATION_CONTENT_TYPE \
+     "application/davnotification+xml; charset=utf-8"
+ 
+diff --git a/imap/http_ischedule.c b/imap/http_ischedule.c
+index 24c30b48e1..9ac1b6fa7d 100644
+--- a/imap/http_ischedule.c
++++ b/imap/http_ischedule.c
+@@ -52,6 +52,8 @@
+ 
+ #include <libical/ical.h>
+ 
++#include <libxml/parser.h>
++
+ #include "global.h"
+ #include "httpd.h"
+ #include "http_caldav_sched.h"
+diff --git a/imap/vcard_support.c b/imap/vcard_support.c
+index aa9e15ac7e..f15824225e 100644
+--- a/imap/vcard_support.c
++++ b/imap/vcard_support.c
+@@ -42,6 +42,7 @@
+  */
+ 
+ #include <config.h>
++#include <libxml/parser.h>
+ #include <libxml/tree.h>
+ 
+ #include "vcard_support.h"
+diff --git a/imap/xcal.c b/imap/xcal.c
+index 1f43d75488..cc749ab439 100644
+--- a/imap/xcal.c
++++ b/imap/xcal.c
+@@ -47,6 +47,7 @@
+ #include <stddef.h> /* for offsetof() macro */
+ #include <syslog.h>
+ 
++#include <libxml/parser.h>
+ #include <libxml/tree.h>
+ 
+ #include "httpd.h"