diff --git a/python-fawltydeps.changes b/python-fawltydeps.changes
index a0edfd4..b4b9a48 100644
--- a/python-fawltydeps.changes
+++ b/python-fawltydeps.changes
@@ -1,21 +1,12 @@
+-------------------------------------------------------------------
+Fri Aug 15 08:47:51 UTC 2025 - Nico Krapp <nico.krapp@suse.com>
+
+- migrate to libalternatives
+
 -------------------------------------------------------------------
 Thu Aug 14 14:09:44 UTC 2025 - Felix Stegmeier <felix.stegmeier@suse.com>
 
 - Add missing runtime requirements
-- Update to 0.20.0
-  * Expand user defined mapping documentation. by @obscurerichard in #480
-  * Follow-up after removing support for Python v3.8 by @jherland in #475
-  * Work around top-level venv special case by @jherland in #468
-  * Upgrade project declarations in pyproject.toml by @jherland in #481
-  * Suggest package names for undeclared imports, when possible by @jherland in #470
-  * CI: call actionlint to check workflow files by @smelc in #485
-  * Add support for *-wildcards in ignore-undeclared and ignore-unused by @jherland in #479
-  * RFC/Follow-up to actionlint CI action by @jherland in #488
-  * Follow-up to #484: Add a --base-dir option by @jherland in #489
-  * CI: run CodeQL by @smelc in #487
-  * CI: call the CodeQL workflow from the main workflow file by @smelc in #491
-  * Fix infinite recursion when --base-dir is not a parent of a source file by @jherland in #492
-  * Update dependencies and bump version to v0.20.0 by @jherland in #493
 
 -------------------------------------------------------------------
 Sun Jul 13 12:15:54 UTC 2025 - Dirk Müller <dmueller@suse.com>
@@ -56,15 +47,6 @@ Tue Apr  1 20:03:48 UTC 2025 - Nico Krapp <nico.krapp@suse.com>
   * Documentation page: mkdocs & GitHub pages by @mknorps in #449
   * Add support for PEP 735 dependency groups by @jherland in #469
 
--------------------------------------------------------------------
-Mon Mar  3 08:53:55 UTC 2025 - Felix Stegmeier <felix.stegmeier@suse.com>
-
-- update to 0.19.0
-  * Drop Python v3.7 support, upgrade deps, add Python v3.13 support by @jherland in #459
-  * Documentation page: mkdocs & GitHub pages by @mknorps in #449
-  * Add support for PEP 735 dependency groups by @jherland in #469
- 
-
 -------------------------------------------------------------------
 Mon Feb 10 14:00:42 UTC 2025 - Dirk Müller <dmueller@suse.com>
 
diff --git a/python-fawltydeps.spec b/python-fawltydeps.spec
index a8298a0..1521f9d 100644
--- a/python-fawltydeps.spec
+++ b/python-fawltydeps.spec
@@ -16,6 +16,12 @@
 #
 
 
+%if 0%{?suse_version} > 1500
+%bcond_without libalternatives
+%else
+%bcond_with libalternatives
+%endif
+
 %{?sle15_python_module_pythons}
 Name:           python-fawltydeps
 Version:        0.20.0
@@ -25,8 +31,7 @@ License:        MIT
 URL:            https://github.com/tweag/FawltyDeps
 Source:         https://github.com/tweag/FawltyDeps/archive/refs/tags/v%{version}.tar.gz#/fawltydeps-%{version}.tar.gz
 BuildRequires:  %{python_module PyYAML >= 6.0.1}
-BuildRequires:  %{python_module base >= 3.8}
-BuildRequires:  %{python_module hypothesis}
+BuildRequires:  %{python_module base >= 3.9.2}
 BuildRequires:  %{python_module importlib-metadata >= 6.6.0}
 BuildRequires:  %{python_module isort > 5.10}
 BuildRequires:  %{python_module nox}
@@ -36,22 +41,25 @@ BuildRequires:  %{python_module pip}
 BuildRequires:  %{python_module poetry-core}
 BuildRequires:  %{python_module pydantic >= 1.10.4}
 BuildRequires:  fdupes
+# Section TEST dependencies
+BuildRequires:  %{python_module pytest >= 7.1.0}
+BuildRequires:  %{python_module hypothesis}
+#
 Requires:       python-PyYAML >= 6.0.1
 Requires:       python-importlib-metadata >= 6.6.0
 Requires:       python-isort > 5.10
 Requires:       python-packaging
 Requires:       python-pip-requirements-parser
 Requires:       python-pydantic
+%if %{with libalternatives}
+Requires:       alts
+BuildRequires:  alts
+%else
 Requires(post): update-alternatives
 Requires(postun): update-alternatives
-Suggests:       python-uv
-# TEST dependencies
-BuildRequires:  %{python_module pytest >= 7.1.0}
-BuildArch:      noarch
-
-%if "%{python_flavor}" < "python311"
-BuildRequires:  %{python_module tomli >= 2.0.1}
 %endif
+Suggests:       python-uv
+BuildArch:      noarch
 %python_subpackages
 
 %description
@@ -78,6 +86,10 @@ skiptests+=" or test_resolve_dependencies_install_deps_on_mixed_packages__raises
 skiptests+=" or test_resolve_dependencies__generates_expected_mappings"
 %pytest -k "not ($skiptests)"
 
+%pre
+# If libalternatives is used: Removing old update-alternatives entries.
+%python_libalternatives_reset_alternative fawltydeps
+
 %post
 %python_install_alternative fawltydeps