diff --git a/python-sphinx-feature-classification.changes b/python-sphinx-feature-classification.changes
index db6474c..d657a14 100644
--- a/python-sphinx-feature-classification.changes
+++ b/python-sphinx-feature-classification.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Jun 20 00:36:30 UTC 2023 - Steve Kowalik <steven.kowalik@suse.com>
+
+- Add missing BuildRequires on six. 
+
 -------------------------------------------------------------------
 Fri Feb 12 13:43:16 UTC 2021 - Dirk Müller <dmueller@suse.com>
 
diff --git a/python-sphinx-feature-classification.spec b/python-sphinx-feature-classification.spec
index 3e81f1c..651c855 100644
--- a/python-sphinx-feature-classification.spec
+++ b/python-sphinx-feature-classification.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python-sphinx-feature-classification
 #
-# Copyright (c) 2021 SUSE LLC
+# Copyright (c) 2023 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -31,6 +31,7 @@ BuildRequires:  %{python_module docutils}
 BuildRequires:  %{python_module fixtures}
 BuildRequires:  %{python_module pbr >= 2.0}
 BuildRequires:  %{python_module pytest}
+BuildRequires:  %{python_module six}
 BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
 Requires:       python-docutils >= 0.11