diff --git a/python-nbclassic.changes b/python-nbclassic.changes
index 728c7b3..4fbdc19 100644
--- a/python-nbclassic.changes
+++ b/python-nbclassic.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Sep  8 10:31:31 UTC 2021 - Stefan Schubert <schubi@suse.de>
+
+- Use libalternatives instead of update-alternatives.
+
 -------------------------------------------------------------------
 Mon Aug 16 12:20:06 UTC 2021 - Ben Greiner <code@bnavigator.de>
 
diff --git a/python-nbclassic.spec b/python-nbclassic.spec
index 9b6b034..4701cb7 100644
--- a/python-nbclassic.spec
+++ b/python-nbclassic.spec
@@ -16,6 +16,12 @@
 #
 
 
+%if 0%{?suse_version} > 1500
+%bcond_without libalternatives
+%else
+%bcond_with libalternatives
+%endif
+
 %{?!python_module:%define python_module() python3-%{**}}
 %define skip_python2 1
 Name:           python-nbclassic
@@ -30,10 +36,17 @@ BuildRequires:  %{python_module jupyter_server >= 1.8}
 BuildRequires:  %{python_module notebook}
 BuildRequires:  %{python_module setuptools}
 BuildRequires:  fdupes
-BuildRequires:  python-rpm-macros
+BuildRequires:  python-rpm-macros >= 20210929
 Requires:       jupyter-nbclassic = %{version}
 Requires:       python-jupyter_server >= 1.8
 Requires:       python-notebook
+%if %{with libalternatives}
+Requires:       alts
+BuildRequires:  alts
+%else
+Requires(post): update-alternatives
+Requires(postun):update-alternatives
+%endif
 # SECTION test requirements
 BuildRequires:  %{python_module pytest-console-scripts}
 BuildRequires:  %{python_module pytest-tornasync}
@@ -75,6 +88,10 @@ install -m 644 -D -t %{buildroot}%{_jupyter_server_confdir} jupyter_server_confi
 %python_clone -a %{buildroot}%{_bindir}/jupyter-nbclassic
 %python_expand %fdupes %{buildroot}%{$python_sitelib}
 
+%pre
+# If libalternatives is used: Removing old update-alternatives entries.
+%python_libalternatives_reset_alternative jupyter-nbclassic
+
 %post
 %python_install_alternative jupyter-nbclassic