diff --git a/security/acme-client/src/opnsense/mvc/app/controllers/OPNsense/AcmeClient/Api/SettingsController.php b/security/acme-client/src/opnsense/mvc/app/controllers/OPNsense/AcmeClient/Api/SettingsController.php
index 5251a32f7..4104f6bf2 100644
--- a/security/acme-client/src/opnsense/mvc/app/controllers/OPNsense/AcmeClient/Api/SettingsController.php
+++ b/security/acme-client/src/opnsense/mvc/app/controllers/OPNsense/AcmeClient/Api/SettingsController.php
@@ -77,7 +77,7 @@ class SettingsController extends ApiMutableModelControllerBase
                     } else {
                         // Cron job NOT found. This should not happen, try to fix
                         // this automatically.
-                        $this->getLogger()->error("AcmeClient: cron job with stored UUID not found in system config: ${cron_uuid}");
+                        $this->getLogger()->error("AcmeClient: cron job with stored UUID not found in system config: {$cron_uuid}");
 
                         // Search for existing AcmeClient cron job.
                         foreach ((new Cron())->getNodeByReference('jobs.job')->iterateItems() as $cron) {
@@ -86,7 +86,7 @@ class SettingsController extends ApiMutableModelControllerBase
                             if ($_origin == 'AcmeClient') {
                                 // Found a matching AcmeClient cron job.
                                 $cron_found = 1;
-                                $this->getLogger()->notice("AcmeClient: found existing AcmeClient cron job, fixing inconsistency in config (new UUID: ${_uuid})");
+                                $this->getLogger()->notice("AcmeClient: found existing AcmeClient cron job, fixing inconsistency in config (new UUID: {$_uuid})");
                                 // Update UUID in Acme Client config.
                                 $mdlAcme->settings->UpdateCron = $_uuid;
                                 // Save updated configuration.
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 269807d1e..6a8f69a64 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
@@ -1236,9 +1236,43 @@
     </field>
     <field>
         <id>validation.dns_sl_key</id>
-        <label>API Key</label>
+        <label>API Key (DEPRECIATED)</label>
         <type>text</type>
     </field>
+    <field>
+        <id>validation.dns_sl_apiver</id>
+        <label>API Version</label>
+        <type>text</type>
+        <help>Available Values: V2</help>
+    </field>
+    <field>
+        <id>validation.dns_sl_token_lifetime</id>
+        <label>Token lifetime</label>
+        <type>text</type>
+        <help>Token lifetime in minutes (0-1440)</help>
+    </field>
+    <field>
+        <id>validation.dns_sl_account_id</id>
+        <label>Account ID</label>
+        <type>text</type>
+        <help>Account number, can be seen in the upper right corner on the provider's website</help>
+    </field>
+    <field>
+        <id>validation.dns_sl_project_name</id>
+        <label>Project name</label>
+        <type>text</type>
+    </field>
+    <field>
+        <id>validation.dns_sl_login_name</id>
+        <label>Service username</label>
+        <type>text</type>
+        <help>Service username, can be seen in the control panel</help>
+    </field>
+    <field>
+        <id>validation.dns_sl_password</id>
+        <label>Password</label>
+        <type>password</type>
+    </field>
     <field>
         <label>Selfhost</label>
         <type>header</type>
diff --git a/security/acme-client/src/opnsense/mvc/app/library/OPNsense/AcmeClient/LeValidation/DnsSelectel.php b/security/acme-client/src/opnsense/mvc/app/library/OPNsense/AcmeClient/LeValidation/DnsSelectel.php
index 56e311266..9d1ee7ec8 100644
--- a/security/acme-client/src/opnsense/mvc/app/library/OPNsense/AcmeClient/LeValidation/DnsSelectel.php
+++ b/security/acme-client/src/opnsense/mvc/app/library/OPNsense/AcmeClient/LeValidation/DnsSelectel.php
@@ -2,6 +2,7 @@
 
 /*
  * Copyright (C) 2020 Frank Wall
+ * Modifications Copyright (C) 2025 Renat Gorbushin
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -40,5 +41,11 @@ class DnsSelectel extends Base implements LeValidationInterface
     public function prepare()
     {
         $this->acme_env['SL_Key'] = (string)$this->config->dns_sl_key;
+        $this->acme_env['SL_Ver'] = (string)$this->config->dns_sl_apiver;
+        $this->acme_env['SL_Expire'] = (string)$this->config->dns_slv2_token_lifetime;
+        $this->acme_env['SL_Login_ID'] = (string)$this->config->dns_sl_account_id;
+        $this->acme_env['SL_Project_Name'] = (string)$this->config->dns_sl_project_name;
+        $this->acme_env['SL_Login_Name'] = (string)$this->config->dns_sl_login_name;
+        $this->acme_env['SL_Pswd'] = (string)$this->config->dns_sl_password;
     }
 }
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 3e4e6b916..672eac7a2 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
@@ -1056,6 +1056,24 @@
                 <dns_sl_key type="TextField">
                     <Required>N</Required>
                 </dns_sl_key>
+                <dns_sl_apiver type="TextField">
+                    <Required>N</Required>
+                </dns_sl_apiver>
+                <dns_sl_token_lifetime type="TextField">
+                    <Required>N</Required>
+                </dns_sl_token_lifetime>
+                <dns_sl_account_id type="TextField">
+                    <Required>N</Required>
+                </dns_sl_account_id>
+                <dns_sl_project_name type="TextField">
+                    <Required>N</Required>
+                </dns_sl_project_name>
+                <dns_sl_login_name type="TextField">
+                    <Required>N</Required>
+                </dns_sl_login_name>
+                <dns_sl_password type="TextField">
+                    <Required>N</Required>
+                </dns_sl_password>
                 <dns_selfhost_user type="TextField">
                     <Required>N</Required>
                 </dns_selfhost_user>