diff -Nru appstream-glib-0.8.2/debian/changelog appstream-glib-0.8.2/debian/changelog
--- appstream-glib-0.8.2/debian/changelog	2022-11-14 17:53:43.000000000 +0000
+++ appstream-glib-0.8.2/debian/changelog	2024-03-17 10:50:27.000000000 +0000
@@ -1,3 +1,11 @@
+appstream-glib (0.8.2-1.1) unstable; urgency=medium
+
+  * NMU upload
+    Resolve FTBFS due to yaml mime content-type changes
+    yaml_content_type.patch (Closes: #1057394)
+
+ -- David Mohammed <fossfreedom@ubuntu.com>  Sun, 17 Mar 2024 10:50:27 +0000
+
 appstream-glib (0.8.2-1) unstable; urgency=medium
 
   [ Matthias Klumpp ]
diff -Nru appstream-glib-0.8.2/debian/patches/series appstream-glib-0.8.2/debian/patches/series
--- appstream-glib-0.8.2/debian/patches/series	1970-01-01 01:00:00.000000000 +0100
+++ appstream-glib-0.8.2/debian/patches/series	2024-03-17 10:50:27.000000000 +0000
@@ -0,0 +1 @@
+yaml_content_type.patch
diff -Nru appstream-glib-0.8.2/debian/patches/yaml_content_type.patch appstream-glib-0.8.2/debian/patches/yaml_content_type.patch
--- appstream-glib-0.8.2/debian/patches/yaml_content_type.patch	1970-01-01 01:00:00.000000000 +0100
+++ appstream-glib-0.8.2/debian/patches/yaml_content_type.patch	2024-03-17 10:50:27.000000000 +0000
@@ -0,0 +1,27 @@
+Forwarded: https://github.com/hughsie/appstream-glib/pull/481
+Author: David Mohammed <fossfreedom@ubuntu.com>
+Last-Update: 2024-03-16
+Description: [PATCH] Support RFC9512 registration for application/yaml Closes #480
+ https://www.rfc-editor.org/rfc/rfc9512.html
+
+---
+ libappstream-glib/as-yaml.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/libappstream-glib/as-yaml.c b/libappstream-glib/as-yaml.c
+index d764d15..41d7b09 100644
+--- a/libappstream-glib/as-yaml.c
++++ b/libappstream-glib/as-yaml.c
+@@ -506,7 +506,8 @@ as_yaml_from_file (GFile *file, AsYamlFromFlags flags, GCancellable *cancellable
+ 	    g_strcmp0 (content_type, "application/x-gzip") == 0) {
+ 		conv = G_CONVERTER (g_zlib_decompressor_new (G_ZLIB_COMPRESSOR_FORMAT_GZIP));
+ 		stream_data = g_converter_input_stream_new (file_stream, conv);
+-	} else if (g_strcmp0 (content_type, "application/x-yaml") == 0) {
++	} else if (g_strcmp0 (content_type, "application/x-yaml") == 0 ||
++			   g_strcmp0 (content_type, "application/yaml") == 0) {
+ 		stream_data = g_object_ref (file_stream);
+ 	} else {
+ 		g_set_error (error,
+-- 
+2.43.0
+