diff --git a/python-tempora.changes b/python-tempora.changes
index b73804c..b22940a 100644
--- a/python-tempora.changes
+++ b/python-tempora.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Sep 30 07:54:19 UTC 2021 - Stefan Schubert <schubi@suse.de>
+
+- Use libalternatives instead of update-alternatives.
+
 -------------------------------------------------------------------
 Wed Sep  1 11:24:10 UTC 2021 - John Paul Adrian Glaubitz <adrian.glaubitz@suse.com>
 
diff --git a/python-tempora.spec b/python-tempora.spec
index 1d0825a..88b06df 100644
--- a/python-tempora.spec
+++ b/python-tempora.spec
@@ -16,6 +16,12 @@
 #
 
 
+%if 0%{?suse_version} > 1500
+%bcond_without libalternatives
+%else
+%bcond_with libalternatives
+%endif
+
 %{?!python_module:%define python_module() python-%{**} python3-%{**}}
 %define skip_python2 1
 Name:           python-tempora
@@ -34,11 +40,15 @@ BuildRequires:  %{python_module setuptools_scm >= 3.4.1}
 BuildRequires:  %{python_module setuptools}
 BuildRequires:  %{python_module toml}
 BuildRequires:  fdupes
-BuildRequires:  python-rpm-macros
+BuildRequires:  python-rpm-macros >= 20210929
 Requires:       python-jaraco.functools >= 1.20
 Requires:       python-pytz
+%if %{with libalternatives}
+Requires:       alts
+%else
 Requires(post): update-alternatives
 Requires(postun):update-alternatives
+%endif
 BuildArch:      noarch
 %python_subpackages
 
@@ -66,6 +76,10 @@ sed -i '/--mypy/d' pytest.ini
 sed -i -e 's:--black::' -e 's:--cov::' -e 's/--flake8//g' pytest.ini
 %pytest
 
+%pre
+# If libalternatives is used: Removing old update-alternatives entries.
+%python_libalternatives_reset_alternative calc-prorate
+
 %post
 %python_install_alternative calc-prorate