diff --git a/0001-gcc14.patch b/0001-gcc14.patch
new file mode 100644
index 0000000..3a30e00
--- /dev/null
+++ b/0001-gcc14.patch
@@ -0,0 +1,15 @@
+gtksourceview.c: In function 'set_source_buffer':
+gtksourceview.c:1589:43: error: assignment to 'GtkSourceBuffer *' {aka 'struct _GtkSourceBuffer *'} from incompatible pointer type 'GtkTextBuffer *' {aka 'struct _GtkTextBuffer *'} [-Wincompatible-pointer-types]
+
+diff -up ./gtksourceview/gtksourceview.c.orig ./gtksourceview/gtksourceview.c
+--- ./gtksourceview/gtksourceview.c.orig	2024-04-25 19:07:06.911596640 -0400
++++ ./gtksourceview/gtksourceview.c	2024-04-25 19:07:31.644768498 -0400
+@@ -1586,7 +1586,7 @@ set_source_buffer (GtkSourceView *view,
+ 	{
+ 		GtkSourceBufferInternal *buffer_internal;
+ 
+-		view->priv->source_buffer = g_object_ref (buffer);
++		view->priv->source_buffer = g_object_ref (GTK_SOURCE_BUFFER (buffer));
+ 
+ 		g_signal_connect (buffer,
+ 				  "highlight-updated",
diff --git a/gtksourceview3.spec b/gtksourceview3.spec
index f2f511a..00c9ec8 100644
--- a/gtksourceview3.spec
+++ b/gtksourceview3.spec
@@ -11,6 +11,8 @@ Summary: Source code editing widget
 License: LGPLv2+
 URL: https://wiki.gnome.org/Projects/GtkSourceView
 Source0: https://download.gnome.org/sources/gtksourceview/3.24/gtksourceview-%{version}.tar.xz
+# fix build with GCC 14 -Wincompatible-pointer-types
+Patch0:  0001-gcc14.patch
 
 BuildRequires: pkgconfig(gdk-pixbuf-2.0)
 BuildRequires: pkgconfig(gobject-introspection-1.0)
@@ -52,7 +54,7 @@ The %{name}-tests package contains tests that can be used to verify
 the functionality of the installed %{name} package.
 
 %prep
-%setup -q -n gtksourceview-%{version}
+%autosetup -n gtksourceview-%{version} -p1
 
 %build
 %configure --disable-gtk-doc --disable-static --enable-installed-tests