diff --git a/.zuul.yaml b/.zuul.yaml
index 46107ee132..56975479b0 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -348,16 +348,16 @@
       - tools/playbooks/probetests/post.yaml
 
 - job:
-    name: swift-probetests-centos-8-stream
+    name: swift-probetests-centos-9-stream
     parent: unittests
-    nodeset: centos-8-stream
+    nodeset: centos-9-stream
     description: |
       Setup a SAIO dev environment and run Swift's probe tests
       under Python 3.
     timeout: 7200
     vars:
       s3_acl: no
-      bindep_profile: test py36
+      bindep_profile: test py39
     pre-run:
       - tools/playbooks/common/install_dependencies.yaml
       - tools/playbooks/saio_single_node_setup/setup_saio.yaml
@@ -367,12 +367,12 @@
     post-run: tools/playbooks/probetests/post.yaml
 
 - job:
-    name: swift-probetests-centos-8-stream-arm64
-    parent: swift-probetests-centos-8-stream
+    name: swift-probetests-centos-9-stream-arm64
+    parent: swift-probetests-centos-9-stream
     nodeset:
       nodes:
-        - name: swift-centos-8-stream-arm64
-          label: centos-8-stream-arm64
+        - name: swift-centos-9-stream-arm64
+          label: centos-9-stream-arm64
     description: |
       Setup a SAIO dev environment and run Swift's probe tests
       under Python 3 on top of arm64 architecture.
@@ -380,7 +380,7 @@
 
 - job:
     name: swift-func-cors
-    parent: swift-probetests-centos-8-stream
+    parent: swift-probetests-centos-9-stream
     description: |
       Setup a SAIO dev environment and run Swift's CORS functional tests
     timeout: 1200
@@ -713,7 +713,7 @@
               - ^doc/(requirements.txt|(manpages|s3api|source)/.*)$
               - ^test/(cors|unit|functional|probe)/.*$
               - ^(.gitreview|.mailmap|AUTHORS|CHANGELOG|.*\.rst)$
-        - swift-probetests-centos-8-stream:
+        - swift-probetests-centos-9-stream:
             irrelevant-files: &probetest-irrelevant-files
               - ^(api-ref|releasenotes)/.*$
               # Keep doc/saio -- we use those sample configs in the saio playbooks
@@ -769,7 +769,7 @@
         - swift-tox-func-ec-py38
         - swift-func-cors
         - swift-tox-func-s3api-tests-tempauth
-        - swift-probetests-centos-8-stream:
+        - swift-probetests-centos-9-stream:
             irrelevant-files: *probetest-irrelevant-files
         - swift-dsvm-functional:
             irrelevant-files: *functest-irrelevant-files
diff --git a/tools/playbooks/common/install_dependencies.yaml b/tools/playbooks/common/install_dependencies.yaml
index 355213f64c..bb801ed488 100644
--- a/tools/playbooks/common/install_dependencies.yaml
+++ b/tools/playbooks/common/install_dependencies.yaml
@@ -22,13 +22,13 @@
         name: pip
         extra_args: --upgrade
 
-    - name: install rsync-daemon - CentOS 8
+    - name: install rsync-daemon - CentOS 8, 9
       package:
         name: rsync-daemon
         state: present
       when:
         - ansible_facts['distribution'] == "CentOS"
-        - ansible_facts['distribution_major_version'] == "8"
+        - ansible_facts['distribution_major_version'] != "7"
 
     - name: install python modules with pip
       pip: name={{ item }} state=present extra_args='--upgrade'
diff --git a/tools/playbooks/cors/install_selenium.yaml b/tools/playbooks/cors/install_selenium.yaml
index b7d08c57f7..f617388f36 100644
--- a/tools/playbooks/cors/install_selenium.yaml
+++ b/tools/playbooks/cors/install_selenium.yaml
@@ -7,7 +7,7 @@
         state: present
     - name: install selenium
       pip:
-        name: selenium
+        name: 'selenium<4'
         state: present
     - name: install firefox
       yum: