diff --git a/python-ctypesgen.changes b/python-ctypesgen.changes
index 1af8922..f6444a1 100644
--- a/python-ctypesgen.changes
+++ b/python-ctypesgen.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Jul  8 08:24:54 UTC 2025 - Markéta Machová <mmachova@suse.com>
+
+- Convert to libalternatives
+
 -------------------------------------------------------------------
 Thu Jan 18 06:43:54 UTC 2024 - Atri Bhattacharya <badshah400@gmail.com>
 
diff --git a/python-ctypesgen.spec b/python-ctypesgen.spec
index 78b5c3a..53d1943 100644
--- a/python-ctypesgen.spec
+++ b/python-ctypesgen.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python-ctypesgen
 #
-# Copyright (c) 2024 SUSE LLC
+# Copyright (c) 2025 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -23,14 +23,14 @@ Summary:        Python wrapper generator for ctypes
 License:        BSD-2-Clause
 URL:            https://github.com/ctypesgen/ctypesgen
 Source:         https://files.pythonhosted.org/packages/source/c/ctypesgen/ctypesgen-%{version}.tar.gz
-BuildRequires:  python-rpm-macros
-BuildRequires:  %{pythons} >= 3.7
 BuildRequires:  %{python_module pip}
 BuildRequires:  %{python_module setuptools >= 44}
 BuildRequires:  %{python_module setuptools_scm >= 3.4.3}
 BuildRequires:  %{python_module toml}
 BuildRequires:  %{python_module wheel}
+BuildRequires:  %{pythons} >= 3.7
 BuildRequires:  fdupes
+BuildRequires:  python-rpm-macros
 BuildArch:      noarch
 %python_subpackages
 
@@ -54,11 +54,8 @@ and creates a wrapper for libraries based on what it finds.
 export TMPDIR=`mktemp -d -p ${PWD}`
 %pyunittest -v
 
-%post
-%python_install_alternative ctypesgen
-
-%postun
-%python_uninstall_alternative ctypesgen
+%pre
+%python_libalternatives_reset_alternative ctypesgen
 
 %files %{python_files}
 %doc CHANGELOG.md README.md