diff --git a/python-six.changes b/python-six.changes
index a03c2ad..ce70bc0 100644
--- a/python-six.changes
+++ b/python-six.changes
@@ -6,6 +6,8 @@ Mon Dec 10 09:20:52 CET 2018 - mcepl@suse.com
       original class.
     * Add `six.ensure_binary`, `six.ensure_text`, and
       `six.ensure_str`.
+- Because of cyclical dependencies between six and Sphinx, we
+  need to to do multibuild.
 
 -------------------------------------------------------------------
 Mon Sep  3 15:37:13 UTC 2018 - Hans-Peter Jansen <hpj@urpla.net>
diff --git a/python-six.spec b/python-six.spec
index d0a636d..90e519c 100644
--- a/python-six.spec
+++ b/python-six.spec
@@ -38,8 +38,10 @@ License:        MIT
 Group:          Development/Libraries/Python
 URL:            http://pypi.python.org/pypi/six/
 Source:         https://files.pythonhosted.org/packages/source/s/six/six-%{version}.tar.gz
-BuildRequires:  %{python_module base}
+BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
+BuildRequires:  python2
+BuildRequires:  python3
 %if %{with test}
 BuildRequires:  %{python_module pytest}
 BuildRequires:  %{python_module py}
@@ -60,7 +62,7 @@ Provides:       %{python_module six-doc = %{version}}
 Summary:        Documentation files for %name
 Group:          Documentation/HTML
 
-%description
+%description -n python-six-doc
 Six is a Python 2 and 3 compatibility library. It provides utility
 functions for smoothing over the differences between the Python
 versions with the goal of writing Python code that is compatible on
@@ -82,6 +84,7 @@ cd documentation && make html && rm _build/html/.buildinfo
 %install
 %if ! %{with test}
 %python_install
+%python_expand %fdupes %{buildroot}%{$python_sitelib}
 %endif
 
 %check