diff --git a/ironic_python_agent/ironic_api_client.py b/ironic_python_agent/ironic_api_client.py
index 9217710c4..19ce2ed1a 100644
--- a/ironic_python_agent/ironic_api_client.py
+++ b/ironic_python_agent/ironic_api_client.py
@@ -32,7 +32,7 @@ CONF = cfg.CONF
 LOG = log.getLogger(__name__)
 
 # TODO(TheJulia): This should be increased at some point.
-MIN_IRONIC_VERSION = (1, 22)
+MIN_IRONIC_VERSION = (1, 31)
 AGENT_VERSION_IRONIC_VERSION = (1, 36)
 AGENT_TOKEN_IRONIC_VERSION = (1, 62)
 
diff --git a/releasenotes/notes/min-ironic-ocata-dff80e567783e87c.yaml b/releasenotes/notes/min-ironic-ocata-dff80e567783e87c.yaml
new file mode 100644
index 000000000..fee77a2b8
--- /dev/null
+++ b/releasenotes/notes/min-ironic-ocata-dff80e567783e87c.yaml
@@ -0,0 +1,6 @@
+---
+upgrade:
+ - |
+ The minimum supported versions of the ironic API is now 1.31,
+ corresponding to the latest available in the Ocata release.
+ All versions before that one are not supported anymore.
</div><div class="naked_ctrl">
<form action="/index.cgi/speech" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://opendev.org/openstack/ironic-python-agent/commit/6c51709a1a66cac8a0b6d46d4b5ee1352e152f00.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://opendev.org/openstack/ironic-python-agent/commit/6c51709a1a66cac8a0b6d46d4b5ee1352e152f00.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech" selected="selected">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>