diff --git a/python-reno.spec b/python-reno.spec
index d797570..37e2908 100644
--- a/python-reno.spec
+++ b/python-reno.spec
@@ -42,6 +42,7 @@ BuildRequires:  python2-devel
 BuildRequires:  python-setuptools
 BuildRequires:  python-pbr
 BuildRequires:  python-babel
+BuildRequires:  python-six
 BuildRequires:  python-sphinx
 BuildRequires:  python-oslo-sphinx
 BuildRequires:  PyYAML