diff --git a/python-pyserial.changes b/python-pyserial.changes
index d4e336f..789588f 100644
--- a/python-pyserial.changes
+++ b/python-pyserial.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Jan 15 13:11:59 UTC 2025 - Nico Krapp <nico.krapp@suse.com>
+
+- Use libalternatives instead of update-alternatives, bsc#1235782
+
 -------------------------------------------------------------------
 Sun Apr 23 23:19:35 UTC 2023 - Matej Cepl <mcepl@suse.com>
 
diff --git a/python-pyserial.spec b/python-pyserial.spec
index a10f031..6785b5f 100644
--- a/python-pyserial.spec
+++ b/python-pyserial.spec
@@ -15,6 +15,11 @@
 # Please submit bugfixes or comments via https://bugs.opensuse.org/
 #
 
+%if 0%{?suse_version} > 1500
+%bcond_without libalternatives
+%else
+%bcond_with libalternatives
+%endif
 
 %{?sle15_python_module_pythons}
 Name:           python-pyserial
@@ -29,8 +34,13 @@ BuildRequires:  %{python_module setuptools}
 BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
 BuildRequires:  python3-Sphinx
+%if %{with libalternatives}
+Requires:       alts
+BuildRequires:  alts
+%else
 Requires(post): update-alternatives
-Requires(preun):update-alternatives
+Requires(postun): update-alternatives
+%endif
 Provides:       python-serial = %{version}
 Obsoletes:      python-serial < %{version}
 BuildArch:      noarch
@@ -89,6 +99,11 @@ rm documentation/_build/doctrees/environment.pickle
 %check
 %python_exec test/run_all_tests.py
 
+%pre
+# If libalternatives is used: Removing old update-alternatives entries.
+%python_libalternatives_reset_alternative pyserial-miniterm
+%python_libalternatives_reset_alternative pyserial-ports
+
 %post
 %python_install_alternative pyserial-miniterm
 %python_install_alternative pyserial-ports