diff --git a/python-json5.changes b/python-json5.changes
index 16a0abf..f05bef1 100644
--- a/python-json5.changes
+++ b/python-json5.changes
@@ -1,3 +1,13 @@
+-------------------------------------------------------------------
+Tue Oct  5 16:04:01 UTC 2021 - Stefan Schubert <schubi@suse.de>
+
+- Added BuildRequires:  alts
+
+-------------------------------------------------------------------
+Fri Oct  1 08:16:33 UTC 2021 - Stefan Schubert <schubi@suse.de>
+
+- Use libalternatives instead of update-alternatives.
+
 -------------------------------------------------------------------
 Tue Jun 22 08:52:38 UTC 2021 - Paolo Stivanin <info@paolostivanin.com>
 
diff --git a/python-json5.spec b/python-json5.spec
index 446027e..f7a23f0 100644
--- a/python-json5.spec
+++ b/python-json5.spec
@@ -16,6 +16,13 @@
 #
 
 
+#
+%if 0%{?suse_version} > 1500
+%bcond_without libalternatives
+%else
+%bcond_with libalternatives
+%endif
+
 %{?!python_module:%define python_module() python-%{**} python3-%{**}}
 Name:           python-json5
 Version:        0.9.6
@@ -28,10 +35,15 @@ Source:         https://github.com/dpranke/pyjson5/archive/v%{version}.tar.gz#/p
 BuildRequires:  %{python_module pytest}
 BuildRequires:  %{python_module setuptools}
 BuildRequires:  fdupes
-BuildRequires:  python-rpm-macros
+BuildRequires:  python-rpm-macros >= 20210929
 Requires:       python-setuptools
+%if %{with libalternatives}
+Requires:       alts
+BuildRequires:  alts
+%else
 Requires(post): update-alternatives
 Requires(postun):update-alternatives
+%endif
 BuildArch:      noarch
 %python_subpackages
 
@@ -61,6 +73,10 @@ slightly more usable as a configuration language:
 %check
 %pytest
 
+%pre
+# If libalternatives is used: Removing old update-alternatives entries.
+%python_libalternatives_reset_alternative pyjson5
+
 %post
 %python_install_alternative pyjson5