diff --git a/python-colander.changes b/python-colander.changes
index 42224d3..8b835c3 100644
--- a/python-colander.changes
+++ b/python-colander.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Mon Apr 20 13:05:17 UTC 2020 - Tomáš Chvátal <tchvatal@suse.com>
+
+- Obsolete the lang subpackage to avoid conflicts
+- Do not generate docu twice, it is provided online by
+  upstream so we don't have to bother really at all
+
 -------------------------------------------------------------------
 Mon Apr 20 09:19:56 UTC 2020 - Matej Cepl <mcepl@suse.com>
 
diff --git a/python-colander.spec b/python-colander.spec
index 775d762..7c3d63e 100644
--- a/python-colander.spec
+++ b/python-colander.spec
@@ -34,12 +34,11 @@ BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
 Requires:       python-iso8601
 Requires:       python-translationstring
+Obsoletes:      python2-colander-doc
+Obsoletes:      python2-colander-lang
+Obsoletes:      python3-colander-doc
+Obsoletes:      python3-colander-lang
 BuildArch:      noarch
-# SECTION documentation requirements
-BuildRequires:  %{python_module Sphinx} >= 1.3.1
-BuildRequires:  %{python_module docutils}
-BuildRequires:  %{python_module pylons-sphinx-themes}
-# /SECTION
 # SECTION test requirements
 BuildRequires:  %{python_module coverage}
 BuildRequires:  %{python_module hupper}
@@ -59,54 +58,24 @@ An extensible package which can be used to:
 - serialize an arbitrary data structure to a data structure composed
   of strings, mappings, and lists.
 
-It is tested on Python 2.7, 3.3, 3.4, 3.5, and 3.6, and PyPy.
-
-Please see http://docs.pylonsproject.org/projects/colander/en/latest/
-for documentation.
-
-%package doc
-Summary:        Documentation for %{name}
-Requires:       %{name} = %{version}
-
-%description doc
-This package contains documentation files for %{name}.
-
-%package lang
-# FIXME: consider using %%lang_package macro
-Summary:        Translations for package %{name}
-Requires:       %{name} = %{version}
-Requires:       python-base
-Supplements:    %{name}
-Provides:       %{name}-lang-all = %{version}
-BuildArch:      noarch
-
-%description lang
-Provides translations for the "%{name}" package.
-
 %prep
 %setup -q -n colander-%{version}
 %autopatch -p1
 
 %build
 %python_build
-%python_exec setup.py build_sphinx && rm build/sphinx/html/.buildinfo
 
 %install
 %python_install
 %find_lang colander
-%python_expand grep -F "%{$python_sitelib}" colander.lang > colander_%{$python_bin_suffix}.lang
 %python_expand %fdupes %{buildroot}%{$python_sitelib}
 
 %check
 %pytest
 
-%files %{python_files} -f colander_%{python_bin_suffix}.lang
+%files %{python_files}
 %license LICENSE.txt
 %doc CHANGES.rst README.rst
 %{python_sitelib}/colander*
 
-%files %{python_files doc}
-%license LICENSE.txt
-%doc build/sphinx/html
-
 %changelog