diff --git a/releasenotes/notes/bug-1996567-d45f9a25c31c14d2.yaml b/releasenotes/notes/bug-1996567-d45f9a25c31c14d2.yaml
new file mode 100644
index 000000000..7bdba9a7c
--- /dev/null
+++ b/releasenotes/notes/bug-1996567-d45f9a25c31c14d2.yaml
@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Now the ``openstack overcloud image build`` command uses CentOS Stream 9 as
+    base os by default.
diff --git a/tripleoclient/tests/v1/overcloud_image/test_overcloud_image.py b/tripleoclient/tests/v1/overcloud_image/test_overcloud_image.py
index 161156f43..c43099eb0 100644
--- a/tripleoclient/tests/v1/overcloud_image/test_overcloud_image.py
+++ b/tripleoclient/tests/v1/overcloud_image/test_overcloud_image.py
@@ -50,7 +50,7 @@ class TestOvercloudImageBuild(TestPluginV1):
             ['/usr/share/openstack-tripleo-common/image-yaml/'
              'overcloud-images-python3.yaml',
              '/usr/share/openstack-tripleo-common/image-yaml/'
-             'overcloud-images-centos8.yaml'],
+             'overcloud-images-centos9.yaml'],
             output_directory='.',
             skip=True,
             images=None)
diff --git a/tripleoclient/v1/overcloud_image.py b/tripleoclient/v1/overcloud_image.py
index 5b9891971..32ad769ed 100644
--- a/tripleoclient/v1/overcloud_image.py
+++ b/tripleoclient/v1/overcloud_image.py
@@ -43,7 +43,7 @@ class BuildOvercloudImage(command.Command):
 
     IMAGE_YAML_PATH = "/usr/share/openstack-tripleo-common/image-yaml"
     DEFAULT_YAML = ['overcloud-images-python3.yaml',
-                    'overcloud-images-centos8.yaml']
+                    'overcloud-images-centos9.yaml']
     REQUIRED_PACKAGES = [
         'openstack-tripleo-common',
         'openstack-ironic-python-agent-builder',