diff --git a/telepathy-glib-function-type-cast.patch b/telepathy-glib-function-type-cast.patch
new file mode 100644
index 0000000..0e4f6f6
--- /dev/null
+++ b/telepathy-glib-function-type-cast.patch
@@ -0,0 +1,27 @@
+From 72412c944b771f3214ddc40fa9dea82cea3a5651 Mon Sep 17 00:00:00 2001
+From: Mamoru TASAKA <mtasaka@fedoraproject.org>
+Date: Fri, 2 Feb 2024 12:17:44 +0900
+Subject: [PATCH] fix: build fix with -Werror=incompatible-pointer-types
+
+gcc14 defaults to -Werror=incompatible-pointer-types .
+Fix build error with this option.
+---
+ telepathy-glib/protocol.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/telepathy-glib/protocol.c b/telepathy-glib/protocol.c
+index 88fdff382..25b36620b 100644
+--- a/telepathy-glib/protocol.c
++++ b/telepathy-glib/protocol.c
+@@ -1791,7 +1791,7 @@ _tp_protocol_parse_manager_file (GKeyFile *file,
+         i++;
+     }
+ 
+-  param_specs = g_ptr_array_new_full (i, tp_value_array_free);
++  param_specs = g_ptr_array_new_full (i, (GDestroyNotify) tp_value_array_free);
+ 
+   for (key = keys; key != NULL && *key != NULL; key++)
+     {
+-- 
+GitLab
+
diff --git a/telepathy-glib.changes b/telepathy-glib.changes
index 5b48711..d3cc8e4 100644
--- a/telepathy-glib.changes
+++ b/telepathy-glib.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Jun  4 21:43:45 UTC 2024 - Michael Gorse <mgorse@suse.com>
+
+- Add telepathy-glib-function-type-cast.patch: fix an invalid cast
+  (glfdo#telepathy/telepathy-glib!4).
+
 -------------------------------------------------------------------
 Tue Mar  5 14:05:37 UTC 2024 - Dominique Leuenberger <dimstar@opensuse.org>
 
diff --git a/telepathy-glib.spec b/telepathy-glib.spec
index cab335e..3f43076 100644
--- a/telepathy-glib.spec
+++ b/telepathy-glib.spec
@@ -24,6 +24,8 @@ License:        LGPL-2.1-or-later
 Group:          Development/Languages/C and C++
 URL:            http://telepathy.freedesktop.org/
 Source:         http://telepathy.freedesktop.org/releases/telepathy-glib/%{name}-%{version}.tar.gz
+# PATCH-FIX-UPSTREAM telepathy-glib-function-type-cast.patch boo#1221707 mgorse@suse.com -- fix an invalid cast.
+Patch0:         telepathy-glib-function-type-cast.patch
 
 BuildRequires:  gtk-doc >= 1.17
 BuildRequires:  libxslt-devel