diff --git a/python-ansi2html.changes b/python-ansi2html.changes
index 5d5e6cd..49e0779 100644
--- a/python-ansi2html.changes
+++ b/python-ansi2html.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Jun 16 12:20:51 UTC 2025 - Markéta Machová <mmachova@suse.com>
+
+- Convert to libalternatives
+
 -------------------------------------------------------------------
 Sun Jun 23 07:43:43 UTC 2024 - Johannes Kastl <opensuse_buildservice@ojkastl.de>
 
diff --git a/python-ansi2html.spec b/python-ansi2html.spec
index a69fb97..d2cb8eb 100644
--- a/python-ansi2html.spec
+++ b/python-ansi2html.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python-ansi2html
 #
-# 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
@@ -16,6 +16,7 @@
 #
 
 
+%bcond_without libalternatives
 %{?sle15_python_module_pythons}
 Name:           python-ansi2html
 Version:        1.9.2
@@ -29,10 +30,10 @@ BuildRequires:  %{python_module pip}
 BuildRequires:  %{python_module pytest}
 BuildRequires:  %{python_module setuptools}
 BuildRequires:  %{python_module wheel}
+BuildRequires:  alts
 BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
-Requires(post): update-alternatives
-Requires(postun): update-alternatives
+Requires:       alts
 BuildArch:      noarch
 %python_subpackages
 
@@ -61,11 +62,8 @@ sed -i 's:from mock:from unittest.mock:' tests/test_ansi2html.py
 # but it runs just ansi2html --version
 %pytest -k 'not test_command_script'
 
-%post
-%python_install_alternative ansi2html
-
-%postun
-%python_uninstall_alternative ansi2html
+%pre
+%python_libalternatives_reset_alternative ansi2html
 
 %files %{python_files}
 %license LICENSE