diff --git a/python-pdd.changes b/python-pdd.changes
index e83651c..7593258 100644
--- a/python-pdd.changes
+++ b/python-pdd.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed May 20 07:26:09 UTC 2020 - Petr Gajdos <pgajdos@suse.com>
+
+- %python3_only -> %python_alternative
+
 -------------------------------------------------------------------
 Wed Apr 24 09:21:19 UTC 2019 - pgajdos@suse.com
 
diff --git a/python-pdd.spec b/python-pdd.spec
index c1e8517..7d1d1fe 100644
--- a/python-pdd.spec
+++ b/python-pdd.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python-pdd
 #
-# Copyright (c) 2019 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2020 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -18,7 +18,6 @@
 
 # pdd is not available for Python 2
 %define skip_python2 1
-
 %{?!python_module:%define python_module() python-%{**} python3-%{**}}
 Name:           python-pdd
 Version:        1.4
@@ -26,20 +25,21 @@ Release:        0
 Summary:        Tiny date, time diff calculator with timers
 License:        GPL-3.0-only
 Group:          Development/Languages/Python
-Url:            https://github.com/jarun/pdd
+URL:            https://github.com/jarun/pdd
 Source:         https://files.pythonhosted.org/packages/source/p/pdd/pdd-%{version}.tar.gz
 BuildRequires:  %{python_module devel}
 BuildRequires:  %{python_module setuptools}
+BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
+Requires:       python-python-dateutil
+Requires:       python-setuptools
+Requires(post): update-alternatives
+Requires(postun): update-alternatives
+BuildArch:      noarch
 # SECTION test requirements
 BuildRequires:  %{python_module pytest}
 BuildRequires:  %{python_module python-dateutil}
 # /SECTION
-BuildRequires:  fdupes
-Requires:       python-python-dateutil
-Requires:       python-setuptools
-BuildArch:      noarch
-
 %python_subpackages
 
 %description
@@ -56,16 +56,23 @@ mv pdd.py pdd
 
 %install
 %python_install
+%python_clone -a %{buildroot}%{_bindir}/pdd
 %python_expand %fdupes %{buildroot}%{$python_sitelib}
 
 %check
 chmod 755 pdd
 %pytest test.py
 
+%post
+%python_install_alternative pdd
+
+%postun
+%python_uninstall_alternative pdd
+
 %files %{python_files}
 %doc README.md CHANGELOG
 %license LICENSE
-%python3_only %{_bindir}/pdd
+%python_alternative %{_bindir}/pdd
 %{python_sitelib}/*
 
 %changelog