diff --git a/.zuul.d/base.yaml b/.zuul.d/base.yaml
index f6aa713601..06f8fd3a18 100644
--- a/.zuul.d/base.yaml
+++ b/.zuul.d/base.yaml
@@ -10,6 +10,7 @@
 - job:
     name: horizon-selenium-headless
     parent: horizon-openstack-tox-base
+    nodeset: ubuntu-focal
     pre-run: playbooks/horizon-selenium-headless/pre.yaml
     vars:
       tox_envlist: selenium-headless
diff --git a/.zuul.d/tempest-and-integrated.yaml b/.zuul.d/tempest-and-integrated.yaml
index df2e9b52ab..c33578af0f 100644
--- a/.zuul.d/tempest-and-integrated.yaml
+++ b/.zuul.d/tempest-and-integrated.yaml
@@ -1,6 +1,7 @@
 - job:
     name: horizon-integration-tests
     parent: devstack
+    nodeset: openstack-single-node-focal
     pre-run: playbooks/horizon-devstack-integration/pre.yaml
     run: playbooks/horizon-devstack-integration/run.yaml
     post-run: playbooks/horizon-devstack-integration/post.yaml