diff --git a/doc/requirements.txt b/doc/requirements.txt
index 77873540be..e2415fbbc7 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -3,7 +3,8 @@
 # process, which may cause wedges in the gate later.
 
 # this is required for the docs build jobs
-sphinx>=2.0.0 # BSD
+sphinx!=1.6.6,!=1.6.7,>=1.6.2,<2.0.0;python_version=='2.7'  # BSD
+sphinx!=1.6.6,!=1.6.7,>=1.6.2;python_version>='3.4'  # BSD
 openstackdocstheme>=1.29.2 # Apache-2.0
 reno>=2.11.3 # Apache-2.0
 doc8>=0.8.0 # Apache-2.0
diff --git a/zuul.d/project.yaml b/zuul.d/project.yaml
index 486ea7e361..c7101727b5 100644
--- a/zuul.d/project.yaml
+++ b/zuul.d/project.yaml
@@ -23,5 +23,6 @@
       - openstack-ansible-deploy-ceph-jobs
       - openstack-ansible-deploy-proxy-jobs
       - openstack-ansible-deploy-distro_ceph-jobs
+      - check-requirements
       - publish-openstack-docs-pti
       - release-notes-jobs-python3