diff --git a/security/acme-client/pkg-descr b/security/acme-client/pkg-descr
index c9429ff87..219c7a8e1 100644
--- a/security/acme-client/pkg-descr
+++ b/security/acme-client/pkg-descr
@@ -17,6 +17,7 @@ full backup and include /var/etc/acme-client.
 Added:
 * add Aurora DNS API
 * add ConoHa DNS API
+* add Constellix DNS API
 
 Changed:
 * use a dedicated acme.sh runtime directory for every cert (#3127)
diff --git a/security/acme-client/src/opnsense/mvc/app/controllers/OPNsense/AcmeClient/forms/dialogValidation.xml b/security/acme-client/src/opnsense/mvc/app/controllers/OPNsense/AcmeClient/forms/dialogValidation.xml
index 7f6addf3d..6babbccd5 100644
--- a/security/acme-client/src/opnsense/mvc/app/controllers/OPNsense/AcmeClient/forms/dialogValidation.xml
+++ b/security/acme-client/src/opnsense/mvc/app/controllers/OPNsense/AcmeClient/forms/dialogValidation.xml
@@ -1742,4 +1742,19 @@
         <label>Identity Service API</label>
         <type>text</type>
     </field>
+    <field>
+        <label>Constellix</label>
+        <type>header</type>
+        <style>table_dns table_dns_constellix</style>
+    </field>
+    <field>
+        <id>validation.dns_constellix_key</id>
+        <label>Key</label>
+        <type>text</type>
+    </field>
+    <field>
+        <id>validation.dns_constellix_secret</id>
+        <label>Secret</label>
+        <type>password</type>
+    </field>
 </form>
diff --git a/security/acme-client/src/opnsense/mvc/app/library/OPNsense/AcmeClient/LeValidation/DnsConstellix.php b/security/acme-client/src/opnsense/mvc/app/library/OPNsense/AcmeClient/LeValidation/DnsConstellix.php
new file mode 100644
index 000000000..6d6e53699
--- /dev/null
+++ b/security/acme-client/src/opnsense/mvc/app/library/OPNsense/AcmeClient/LeValidation/DnsConstellix.php
@@ -0,0 +1,44 @@
+<?php
+
+/*
+ * Copyright (C) 2024 Frank Wall
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+namespace OPNsense\AcmeClient\LeValidation;
+
+use OPNsense\AcmeClient\LeValidationInterface;
+use OPNsense\Core\Config;
+
+/**
+ * Constellix API
+ * @package OPNsense\AcmeClient
+ */
+class DnsConstellix extends Base implements LeValidationInterface
+{
+    public function prepare()
+    {
+        $this->acme_env['CONSTELLIX_Key'] = (string)$this->config->dns_constellix_key;
+        $this->acme_env['CONSTELLIX_Secret'] = (string)$this->config->dns_constellix_secret;
+    }
+}
diff --git a/security/acme-client/src/opnsense/mvc/app/models/OPNsense/AcmeClient/AcmeClient.xml b/security/acme-client/src/opnsense/mvc/app/models/OPNsense/AcmeClient/AcmeClient.xml
index 82bad6b75..13c804c07 100644
--- a/security/acme-client/src/opnsense/mvc/app/models/OPNsense/AcmeClient/AcmeClient.xml
+++ b/security/acme-client/src/opnsense/mvc/app/models/OPNsense/AcmeClient/AcmeClient.xml
@@ -436,6 +436,7 @@
                         <dns_cx>CloudXNS.com</dns_cx>
                         <dns_cn>Core-Networks</dns_cn>
                         <dns_conoha>ConoHa</dns_conoha>
+                        <dns_constellix>Constellix</dns_constellix>
                         <dns_cpanel>cPanel</dns_cpanel>
                         <dns_cyon>cyon.ch</dns_cyon>
                         <dns_ddnss>DDNSS</dns_ddnss>
@@ -1216,6 +1217,12 @@
                     <Required>N</Required>
                     <default>https://identity.xxxx.conoha.io/v2.0</default>
                 </dns_conoha_idapi>
+                <dns_constellix_key type="TextField">
+                    <Required>N</Required>
+                </dns_constellix_key>
+                <dns_constellix_secret type="TextField">
+                    <Required>N</Required>
+                </dns_constellix_secret>
             </validation>
         </validations>
         <actions>