diff --git a/security/acme-client/pkg-descr b/security/acme-client/pkg-descr
index f96250468..df3044f38 100644
--- a/security/acme-client/pkg-descr
+++ b/security/acme-client/pkg-descr
@@ -8,6 +8,11 @@ WWW: https://github.com/acmesh-official/acme.sh
 Plugin Changelog
 ================
 
+2.2
+
+Changed:
+* BREAKING: use configured DNS sleep time for Namesilo instead of hardcoded value (#2121)
+
 2.1
 
 Added:
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 7866682af..4ad41e7ea 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
@@ -752,6 +752,11 @@
         <type>header</type>
         <style>table_dns table_dns_namesilo</style>
     </field>
+    <field>
+        <label>NOTE: A DNS sleep time of at least 1000 is recommended.</label>
+        <type>header</type>
+        <style>table_dns table_dns_namesilo</style>
+    </field>
     <field>
         <id>validation.dns_namesilo_key</id>
         <label>Key</label>
diff --git a/security/acme-client/src/opnsense/mvc/app/library/OPNsense/AcmeClient/LeValidation/DnsNamesilo.php b/security/acme-client/src/opnsense/mvc/app/library/OPNsense/AcmeClient/LeValidation/DnsNamesilo.php
index 1cfa7f326..98eca7ccf 100644
--- a/security/acme-client/src/opnsense/mvc/app/library/OPNsense/AcmeClient/LeValidation/DnsNamesilo.php
+++ b/security/acme-client/src/opnsense/mvc/app/library/OPNsense/AcmeClient/LeValidation/DnsNamesilo.php
@@ -40,7 +40,5 @@ class DnsNamesilo extends Base implements LeValidationInterface
     public function prepare()
     {
         $this->acme_env['Namesilo_Key'] = (string)$this->config->dns_namesilo_key;
-        // Namesilo applies changes to DNS records only every 15 minutes.
-        $this->acme_args[] = '--dnssleep 960';
     }
 }