diff --git a/ansible/inventory/group_vars/all/globals b/ansible/inventory/group_vars/all/globals
index 3df1218df..795ad98b1 100644
--- a/ansible/inventory/group_vars/all/globals
+++ b/ansible/inventory/group_vars/all/globals
@@ -53,8 +53,8 @@ kayobe_ansible_user: "stack"
 os_distribution: "rocky"
 
 # OS release. Valid options are "9-stream" when os_distribution is "centos", or
-# "9" when os_distribution is "rocky", or "jammy" and "noble" (with "noble"
-# being the default) when os_distribution is "ubuntu".
+# "9" when os_distribution is "rocky", or "noble" when os_distribution is
+# "ubuntu".
 os_release: >-
   {{ '9-stream' if os_distribution == 'centos'
   else '9' if os_distribution == 'rocky'
diff --git a/doc/source/installation.rst b/doc/source/installation.rst
index 053bff63e..01fd80f2f 100644
--- a/doc/source/installation.rst
+++ b/doc/source/installation.rst
@@ -17,7 +17,6 @@ control host:
 
 - CentOS Stream 9 (since Zed 13.0.0 release)
 - Rocky Linux 9 (since Zed 13.0.0 release)
-- Ubuntu Jammy 22.04 (since Zed 13.0.0 release)
 - Ubuntu Noble 24.04 (since Dalmatian 17.0.0 release)
 
 See the :doc:`support matrix <support-matrix>` for details of supported
diff --git a/doc/source/support-matrix.rst b/doc/source/support-matrix.rst
index f3ad926ef..e52fa111c 100644
--- a/doc/source/support-matrix.rst
+++ b/doc/source/support-matrix.rst
@@ -10,7 +10,6 @@ Supported Operating Systems
 Kayobe supports the following host Operating Systems (OS):
 
 * Rocky Linux 9 (since Zed 13.0.0 release)
-* Ubuntu Jammy 22.04 (since Zed 13.0.0 release)
 * Ubuntu Noble 24.04 (since Dalmatian 17.0.0 release)
 
 In addition to that CentOS Stream 9 host OS is functional, but not officially
diff --git a/zuul.d/jobs.yaml b/zuul.d/jobs.yaml
index 57bbe0fcc..07654a8d4 100644
--- a/zuul.d/jobs.yaml
+++ b/zuul.d/jobs.yaml
@@ -270,8 +270,6 @@
       overcloud_container_image_regex: "^base"
       seed_container_image_regex: "^base"
 
-# This job builds default overcloud images but skips the build of bifrost seed
-# images which are currently timing out on Ubuntu Jammy.
 - job:
     name: kayobe-seed-images-rocky9-podman
     parent: kayobe-seed-images-base
diff --git a/zuul.d/nodesets.yaml b/zuul.d/nodesets.yaml
index c47febe3a..3dd99d404 100644
--- a/zuul.d/nodesets.yaml
+++ b/zuul.d/nodesets.yaml
@@ -11,12 +11,6 @@
       - name: primary
         label: rockylinux-9
 
-- nodeset:
-    name: kayobe-ubuntu-jammy
-    nodes:
-      - name: primary
-        label: ubuntu-jammy
-
 - nodeset:
     name: kayobe-ubuntu-noble
     nodes: