diff --git a/python-topy.changes b/python-topy.changes
index ee2f3cf..212646e 100644
--- a/python-topy.changes
+++ b/python-topy.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon May 18 09:10:33 UTC 2020 - Petr Gajdos <pgajdos@suse.com>
+
+- %python3_only -> %python_alternative
+
 -------------------------------------------------------------------
 Sat Mar 16 17:01:42 UTC 2019 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/python-topy.spec b/python-topy.spec
index a4aa356..985fd51 100644
--- a/python-topy.spec
+++ b/python-topy.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python-topy
 #
-# 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
@@ -30,6 +30,8 @@ BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
 Requires:       python-beautifulsoup4
 Requires:       python-regex >= 2016.07.14
+Requires(post): update-alternatives
+Requires(postun): update-alternatives
 BuildArch:      noarch
 # SECTION test requirements
 BuildRequires:  %{python_module beautifulsoup4}
@@ -50,16 +52,23 @@ sed -i '1 { /^#!/ d }' topy/topy.py
 
 %install
 %python_install
+%python_clone -a %{buildroot}%{_bindir}/topy
 %python_expand %fdupes %{buildroot}%{$python_sitelib}
 
 %check
 export LANG=en_US.UTF-8
 %python_exec setup.py test
 
+%post
+%python_install_alternative topy
+
+%postun
+%python_uninstall_alternative topy
+
 %files %{python_files}
 %doc README.rst
 %license LICENSE.txt
-%python3_only %{_bindir}/topy
+%python_alternative %{_bindir}/topy
 %{python_sitelib}/*
 
 %changelog