diff --git a/zuul.d/layout.yaml b/zuul.d/layout.yaml
index 4bcf772c8..199de5a8d 100644
--- a/zuul.d/layout.yaml
+++ b/zuul.d/layout.yaml
@@ -30,7 +30,7 @@
         - puppet-openstack-libraries-puppet-syntax-6-ubuntu-focal
         - puppet-openstack-libraries-puppet-syntax-7-ubuntu-focal
         - puppet-openstack-libraries-puppet-unit-6.21-ubuntu-focal
-        - puppet-openstack-libraries-puppet-unit-7.10-centos-8-stream
+        - puppet-openstack-libraries-puppet-unit-7.10-centos-9-stream
         - puppet-openstack-libraries-puppet-unit-7.10-ubuntu-focal
         - puppet-openstack-libraries-puppet-unit-latest-ubuntu-focal
         - puppet-openstack-libraries-litmus-6.21-ubuntu-focal
@@ -43,7 +43,7 @@
         - puppet-openstack-libraries-puppet-lint-ubuntu-focal
         - puppet-openstack-libraries-puppet-syntax-6-ubuntu-focal
         - puppet-openstack-libraries-puppet-unit-6.21-ubuntu-focal
-        - puppet-openstack-libraries-puppet-unit-7.10-centos-8-stream
+        - puppet-openstack-libraries-puppet-unit-7.10-centos-9-stream
         - puppet-openstack-libraries-litmus-7.10-centos-8-stream
 
 # integration jobs
diff --git a/zuul.d/libraries.yaml b/zuul.d/libraries.yaml
index 93443dba8..f4b356835 100644
--- a/zuul.d/libraries.yaml
+++ b/zuul.d/libraries.yaml
@@ -2,11 +2,13 @@
 # This file contains the jobs for the puppet openstack libraries
 #
 - job:
-    name: puppet-openstack-libraries-puppet-unit-7.10-centos-8-stream
+    name: puppet-openstack-libraries-puppet-unit-7.10-centos-9-stream
     parent: puppet-openstack-libraries-puppet-unit-base
-    nodeset: centos-8-stream
+    nodeset: centos-9-stream
     vars:
       puppet_gem_version: 7.10.0
+      # NOTE(tkajinam): rspec-puppet >= 2.10.0 is required for Ruby 3 support
+      rspec_puppet_version: '= 2.10.0'
 
 - job:
     name: puppet-openstack-libraries-puppet-unit-6.21-ubuntu-focal
diff --git a/zuul.d/unit.yaml b/zuul.d/unit.yaml
index 3133dc5b5..eeb8f3141 100644
--- a/zuul.d/unit.yaml
+++ b/zuul.d/unit.yaml
@@ -2,11 +2,13 @@
 # This file contains the puppet unit job configurations
 #
 - job:
-    name: puppet-openstack-unit-7.10-centos-8-stream
+    name: puppet-openstack-unit-7.10-centos-9-stream
     parent: puppet-openstack-unit-base
-    nodeset: centos-8-stream
+    nodeset: centos-9-stream
     vars:
       puppet_gem_version: 7.10.0
+      # NOTE(tkajinam): rspec-puppet >= 2.10.0 is required for Ruby 3 support
+      rspec_puppet_version: '= 2.10.0'
 
 - job:
     name: puppet-openstack-unit-6.21-ubuntu-focal
@@ -37,12 +39,12 @@
     name: puppet-openstack-module-unit-jobs
     check:
       jobs:
-        - puppet-openstack-unit-7.10-centos-8-stream
+        - puppet-openstack-unit-7.10-centos-9-stream
         - puppet-openstack-unit-6.21-ubuntu-focal
         - puppet-openstack-unit-7.10-ubuntu-focal
         - puppet-openstack-unit-latest-ubuntu-focal
     gate:
       jobs:
-        - puppet-openstack-unit-7.10-centos-8-stream
+        - puppet-openstack-unit-7.10-centos-9-stream
         - puppet-openstack-unit-6.21-ubuntu-focal
         - puppet-openstack-unit-7.10-ubuntu-focal