diff --git a/ironicclient/osc/plugin.py b/ironicclient/osc/plugin.py
index 814637b70..10b04cdc4 100644
--- a/ironicclient/osc/plugin.py
+++ b/ironicclient/osc/plugin.py
@@ -23,7 +23,7 @@ LOG = logging.getLogger(__name__)
 
 API_VERSION_OPTION = 'os_baremetal_api_version'
 API_NAME = 'baremetal'
-LAST_KNOWN_API_VERSION = 20
+LAST_KNOWN_API_VERSION = 22
 API_VERSIONS = {
     '1.%d' % i: 'ironicclient.v1.client.Client'
     for i in range(1, LAST_KNOWN_API_VERSION + 1)
diff --git a/releasenotes/notes/osc-max-microver-22-dc0d91a62f03a2e6.yaml b/releasenotes/notes/osc-max-microver-22-dc0d91a62f03a2e6.yaml
new file mode 100644
index 000000000..0911b9ecd
--- /dev/null
+++ b/releasenotes/notes/osc-max-microver-22-dc0d91a62f03a2e6.yaml
@@ -0,0 +1,4 @@
+---
+fixes:
+  - Fixes the OpenStackClient plugin so that
+    microversions 1.21 and 1.22 are supported.