diff --git a/lower-constraints.txt b/lower-constraints.txt
index e8d734a29..12044ce93 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -16,6 +16,7 @@ psutil==5.8.0
 pytest==6.2.1
 pytest-html==3.1.1
 pytest-xdist==2.2.0
+python-dateutil==2.8.0
 python-glanceclient==3.2.2
 python-heatclient==2.3.0
 python-ironicclient==4.6.1
diff --git a/zuul.d/project.yaml b/zuul.d/project.yaml
index a876845ff..58fdf1c3f 100644
--- a/zuul.d/project.yaml
+++ b/zuul.d/project.yaml
@@ -3,7 +3,7 @@
       - ansible-role-jobs
       - build-openstack-docs-pti
       - build-release-notes-jobs-python3
-      # - check-requirements
+      - check-requirements
       - devstack-tobiko
       - devstack-tobiko-ceph
       - devstack-tobiko-heat