diff --git a/idle3.appdata.xml b/idle3.appdata.xml
index 554b7c4..b494f1e 100644
--- a/idle3.appdata.xml
+++ b/idle3.appdata.xml
@@ -1,16 +1,16 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<!-- Copyright 2017 Zbigniew Jędrzejewski-Szmek -->
-<application>
-  <id type="desktop">idle3.desktop</id>
+<component type="desktop-application">
+  <id>org.python.IDLE3</id>
+  <launchable type="desktop-id">idle3.desktop</launchable>
+
   <name>IDLE3</name>
-  <metadata_licence>CC0</metadata_licence>
-  <project_license>Python-2.0</project_license>
   <summary>Python 3 Integrated Development and Learning Environment</summary>
+
   <description>
     <p>
       IDLE is Python’s Integrated Development and Learning Environment.
-      The GUI is uniform between Windows, Unix, and Mac OS X.
+      The GUI is uniform between Windows, Unix, and macOS.
       IDLE provides an easy way to start writing, running, and debugging
       Python code.
     </p>
@@ -19,17 +19,33 @@
       It provides:
     </p>
     <ul>
-       <li>a Python shell window (interactive interpreter) with colorizing of code input, output, and error messages,</li>
-       <li>a multi-window text editor with multiple undo, Python colorizing, smart indent, call tips, auto completion, and other features,</li>
-       <li>search within any window, replace within editor windows, and search through multiple files (grep),</li>
-       <li>a debugger with persistent breakpoints, stepping, and viewing of global and local namespaces.</li>
+      <li>a Python shell window (interactive interpreter) with colorizing of code input, output, and error messages,</li>
+      <li>a multi-window text editor with multiple undo, Python colorizing, smart indent, call tips, auto completion, and other features,</li>
+      <li>search within any window, replace within editor windows, and search through multiple files (grep),</li>
+      <li>a debugger with persistent breakpoints, stepping, and viewing of global and local namespaces.</li>
     </ul>
   </description>
+
+  <developer id="org.python">
+    <name>Python Software Foundation</name>
+  </developer>
+
   <url type="homepage">https://docs.python.org/3/library/idle.html</url>
+
   <screenshots>
-    <screenshot type="default">http://in.waw.pl/~zbyszek/fedora/idle3-appdata/idle3-main-window.png</screenshot>
-    <screenshot>http://in.waw.pl/~zbyszek/fedora/idle3-appdata/idle3-class-browser.png</screenshot>
-    <screenshot>http://in.waw.pl/~zbyszek/fedora/idle3-appdata/idle3-code-viewer.png</screenshot>
+    <screenshot type="default">
+      <image>https://in.waw.pl/~zbyszek/fedora/idle3-appdata/idle3-main-window.png</image>
+    </screenshot>
+    <screenshot>
+      <image>https://in.waw.pl/~zbyszek/fedora/idle3-appdata/idle3-class-browser.png</image>
+    </screenshot>
+    <screenshot>
+      <image>https://in.waw.pl/~zbyszek/fedora/idle3-appdata/idle3-code-viewer.png</image>
+    </screenshot>
   </screenshots>
+
+  <project_license>Python-2.0</project_license>
+  <metadata_license>CC0-1.0</metadata_license>
   <update_contact>zbyszek@in.waw.pl</update_contact>
-</application>
+</component>
+
diff --git a/python312.changes b/python312.changes
index 739f893..66cab89 100644
--- a/python312.changes
+++ b/python312.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Thu Sep 18 08:15:31 UTC 2025 - Dominique Leuenberger <dimstar@opensuse.org>
+
+- Require AppStream to validate appdata file instead of deprecated
+  appstream-glib.
+- Update idle3.appdata.xml to pass the more pedantic appstreamcli.
+
 -------------------------------------------------------------------
 Fri Aug  1 20:09:24 UTC 2025 - Matej Cepl <mcepl@cepl.eu>
 
diff --git a/python312.spec b/python312.spec
index a614442..d21735e 100644
--- a/python312.spec
+++ b/python312.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python312
 #
-# Copyright (c) 2025 SUSE LLC
+# Copyright (c) 2025 SUSE LLC and contributors
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -230,7 +230,7 @@ BuildRequires:  python3-dataclasses
 %endif
 %if %{with general}
 # required for idle3 (.desktop and .appdata.xml files)
-BuildRequires:  appstream-glib
+BuildRequires:  AppStream
 BuildRequires:  gcc-c++
 BuildRequires:  gdbm-devel
 BuildRequires:  gettext
@@ -698,7 +698,7 @@ install -m 644 -D -t %{buildroot}%{_datadir}/applications idle%{python_version}.
 cp %{SOURCE20} idle%{python_version}.appdata.xml
 sed -i -e 's:idle3.desktop:idle%{python_version}.desktop:g' idle%{python_version}.appdata.xml
 install -m 644 -D -t %{buildroot}%{_datadir}/metainfo idle%{python_version}.appdata.xml
-appstream-util validate-relax --nonet %{buildroot}%{_datadir}/metainfo/idle%{python_version}.appdata.xml
+appstreamcli validate --no-net %{buildroot}%{_datadir}/metainfo/idle%{python_version}.appdata.xml
 
 %fdupes %{buildroot}/%{_libdir}/python%{python_version}
 %endif