diff --git a/zuul.d/legacy-ironic-jobs.yaml b/zuul.d/legacy-ironic-jobs.yaml
index f99849281d..58bea1c7a0 100644
--- a/zuul.d/legacy-ironic-jobs.yaml
+++ b/zuul.d/legacy-ironic-jobs.yaml
@@ -19,7 +19,8 @@
       - openstack/ironic
       - openstack/ironic-lib
       - openstack/ironic-python-agent
-      - openstack/ironic-tempest-plugin
+      - name: openstack/ironic-tempest-plugin
+        override-checkout: 1.5.1
       - openstack/python-ironicclient
     post-run: playbooks/legacy/ironic-dsvm-base/post.yaml
 
@@ -44,7 +45,8 @@
       - openstack/ironic
       - openstack/ironic-lib
       - openstack/ironic-python-agent
-      - openstack/ironic-tempest-plugin
+      - name: openstack/ironic-tempest-plugin
+        override-checkout: 1.5.1
       - openstack/networking-generic-switch
       - openstack/python-ironicclient
     post-run: playbooks/legacy/ironic-dsvm-base-multinode/post.yaml