diff --git a/python-chardet.changes b/python-chardet.changes
index 7034bef..cb7b1f3 100644
--- a/python-chardet.changes
+++ b/python-chardet.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Aug 15 09:57:21 UTC 2017 - dmueller@suse.com
+
+- add update-alternative support for py2/py3 coinstallability
+
 -------------------------------------------------------------------
 Thu Jun 29 08:43:41 UTC 2017 - ecsos@opensuse.org
 
diff --git a/python-chardet.spec b/python-chardet.spec
index a429e47..4bed95b 100644
--- a/python-chardet.spec
+++ b/python-chardet.spec
@@ -73,15 +73,26 @@ or more files::
 
 %install
 %python_install
-%python_expand %fdupes -s %{buildroot}%{$python_sitelib}
+%{python_expand %$python_install
+mv %{buildroot}%{_bindir}/chardetect %{buildroot}%{_bindir}/chardetect-%{$python_bin_suffix}
+%fdupes -s %{buildroot}%{$python_sitelib}
+}
+
+%prepare_alternative chardetect
 
 %check
 %python_exec setup.py test
 
+%post
+%python_install_alternative chardetect
+
+%postun
+%python_install_alternative chardetect
+
 %files %{python_files}
 %defattr(-,root,root,-)
 %doc README.rst
-%python3_only %{_bindir}/chardetect
+%python_alternative %{_bindir}/chardetect
 %{python_sitelib}/chardet
 %{python_sitelib}/chardet-%{version}-py%{python_version}.egg-info