diff --git a/python-CommonMark.changes b/python-CommonMark.changes
index 402c84a..78030b7 100644
--- a/python-CommonMark.changes
+++ b/python-CommonMark.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed May  6 09:55:17 UTC 2020 - Matej Cepl <mcepl@suse.com>
+
+- Don't use %python3_only command, but properly use alternatives.
+
 -------------------------------------------------------------------
 Mon Mar 16 10:26:20 UTC 2020 - Tomáš Chvátal <tchvatal@suse.com>
 
diff --git a/python-CommonMark.spec b/python-CommonMark.spec
index 6faaa46..78fc7a5 100644
--- a/python-CommonMark.spec
+++ b/python-CommonMark.spec
@@ -30,6 +30,8 @@ BuildRequires:  %{python_module setuptools}
 BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
 Requires:       python-setuptools
+Requires(post): update-alternatives
+Requires(postun): update-alternatives
 Provides:       python-commonmark = %{version}
 Obsoletes:      python-commonmark < %{version}
 BuildArch:      noarch
@@ -60,6 +62,7 @@ CommonMark specification, using only native modules.
 
 %install
 %python_install
+%python_clone -a %{buildroot}%{_bindir}/cmark
 %python_expand %fdupes %{buildroot}%{$python_sitelib}
 
 %check
@@ -68,10 +71,16 @@ export LANG=en_US.UTF-8
 # On python2 we error out on unicode issues
 PYTHONPATH=%{buildroot}%{python3_sitelib} python3 setup.py test
 
+%post
+%python_install_alternative cmark
+
+%postun
+%python_uninstall_alternative cmark
+
 %files %{python_files}
 %license LICENSE
 %doc README.rst
 %{python_sitelib}/*
-%python3_only %{_bindir}/cmark
+%python_alternative %{_bindir}/cmark
 
 %changelog