diff --git a/openstack/barbican/barbican.spec.j2 b/openstack/barbican/barbican.spec.j2
index 2c4cb8072..5b1aef636 100644
--- a/openstack/barbican/barbican.spec.j2
+++ b/openstack/barbican/barbican.spec.j2
@@ -170,6 +170,7 @@ Summary:        OpenStack key and secret management (Barbican) - Documentation
 Group:          Documentation/HTML
 BuildRequires:  {{ py3('Sphinx') }}
 BuildRequires:  {{ py3('openstackdocstheme') }}
+BuildRequires:  {{ py3('sphinxcontrib-svg2pdfconverter') }}
 
 %description doc
 Barbican is a REST API designed for the secure storage, provisioning and
diff --git a/openstack/cyborg/cyborg.spec.j2 b/openstack/cyborg/cyborg.spec.j2
index 9622bf38b..bdebdd9c2 100644
--- a/openstack/cyborg/cyborg.spec.j2
+++ b/openstack/cyborg/cyborg.spec.j2
@@ -100,6 +100,7 @@ BuildRequires:  {{ py2pkg('Sphinx') }}
 BuildRequires:  {{ py2pkg('openstackdocstheme') }}
 BuildRequires:  {{ py2pkg('os-api-ref') }}
 BuildRequires:  {{ py2pkg('oslosphinx') }}
+BuildRequires:  {{ py2pkg('sphinx-feature-classification') }}
 BuildRequires:  {{ py2pkg('sphinxcontrib-pecanwsme ') }}
 BuildRequires:  {{ py2pkg('sphinxcontrib-seqdiag ') }}