diff --git a/www/caddy/Makefile b/www/caddy/Makefile
index 4ad87d41c..3e61d6cc6 100644
--- a/www/caddy/Makefile
+++ b/www/caddy/Makefile
@@ -1,6 +1,5 @@
 PLUGIN_NAME=		caddy
-PLUGIN_VERSION=		1.5.5
-PLUGIN_REVISION=	1
+PLUGIN_VERSION=		1.5.6
 PLUGIN_DEPENDS=		caddy-custom
 PLUGIN_COMMENT=		Easy to configure Reverse Proxy with Automatic HTTPS and Dynamic DNS
 PLUGIN_MAINTAINER=	cedrik@pischem.com
diff --git a/www/caddy/pkg-descr b/www/caddy/pkg-descr
index ea38afb12..c7e00bd68 100644
--- a/www/caddy/pkg-descr
+++ b/www/caddy/pkg-descr
@@ -29,6 +29,7 @@ Plugin Changelog
 1.5.6
 
 * Fix: Wildcard domains with activated "Dynamic DNS" update their base domain with * instead of @.
+* Add: DNS Providers: Netcup, RFC2136
 
 1.5.5
 
diff --git a/www/caddy/src/opnsense/mvc/app/controllers/OPNsense/Caddy/forms/dnsprovider.xml b/www/caddy/src/opnsense/mvc/app/controllers/OPNsense/Caddy/forms/dnsprovider.xml
index 264a7e27c..7f469d4e9 100644
--- a/www/caddy/src/opnsense/mvc/app/controllers/OPNsense/Caddy/forms/dnsprovider.xml
+++ b/www/caddy/src/opnsense/mvc/app/controllers/OPNsense/Caddy/forms/dnsprovider.xml
@@ -9,7 +9,7 @@
         <id>caddy.general.TlsDnsApiKey</id>
         <label>DNS API Standard Field</label>
         <type>text</type>
-        <help><![CDATA[This is the standard field for the API Key. Field can be left empty if optional: Cloudflare "api_token", Duckdns "api_token", DigitalOcean "auth_token", Godaddy "api_token", Gandi "bearer_token", IONOS "api_token", deSEC "token", Route53 "access_key_id", Porkbun "api_key", ACME-DNS "username", Netlify "personal_access_token", Njalla "api_token", Google Cloud DNS "gcp_project", Azure "tenant_id", OVH "endpoint", Namecheap "api_key", PowerDNS "server_url", DDNSS "api_token", Linode "api_token", Tencent Cloud "secret_id", Dinahosting "username", Hexonet "username", Mail-in-a-Box "api_url".]]></help>
+        <help><![CDATA[This is the standard field for the API Key. Field can be left empty if optional: Cloudflare "api_token", Duckdns "api_token", DigitalOcean "auth_token", Godaddy "api_token", Gandi "bearer_token", IONOS "api_token", deSEC "token", Route53 "access_key_id", Porkbun "api_key", ACME-DNS "username", Netlify "personal_access_token", Njalla "api_token", Google Cloud DNS "gcp_project", Azure "tenant_id", OVH "endpoint", Namecheap "api_key", PowerDNS "server_url", DDNSS "api_token", Linode "api_token", Tencent Cloud "secret_id", Dinahosting "username", Hexonet "username", Mail-in-a-Box "api_url", Netcup "customer_number", RFC2136 "key_name".]]></help>
     </field>
     <field>
         <type>header</type>
@@ -20,19 +20,19 @@
         <id>caddy.general.TlsDnsSecretApiKey</id>
         <label>DNS API Additional Field 1</label>
         <type>text</type>
-        <help><![CDATA[Leave empty if your DNS Provider isn't specified here. Field can be left empty if optional: Duckdns "override_domain", Route53 "secret_access_key", Porkbun "api_secret_key", ACME-DNS "password", Azure "client_id", OVH "application_key", Namecheap "user", PowerDNS "api_token", DDNSS "username", Linode "api_url", Tencent Cloud "secret_key", Dinahosting "password", Hexonet "password", Mail-in-a-Box "email_address".]]></help>
+        <help><![CDATA[Leave empty if your DNS Provider isn't specified here. Field can be left empty if optional: Duckdns "override_domain", Route53 "secret_access_key", Porkbun "api_secret_key", ACME-DNS "password", Azure "client_id", OVH "application_key", Namecheap "user", PowerDNS "api_token", DDNSS "username", Linode "api_url", Tencent Cloud "secret_key", Dinahosting "password", Hexonet "password", Mail-in-a-Box "email_address", Netcup "api_key", RFC2136 "key_alg".]]></help>
     </field>
     <field>
         <id>caddy.general.TlsDnsOptionalField1</id>
         <label>DNS API Additional Field 2</label>
         <type>text</type>
-        <help><![CDATA[Leave empty if your DNS Provider isn't specified here. Field can be left empty if optional: Route53 "max_retries", ACME-DNS "subdomain", Azure "client_secret", OVH "application_secret", Namecheap "api_endpoint", DDNSS "password", Linode "api_version", Mail-in-a-Box "password".]]></help>
+        <help><![CDATA[Leave empty if your DNS Provider isn't specified here. Field can be left empty if optional: Route53 "max_retries", ACME-DNS "subdomain", Azure "client_secret", OVH "application_secret", Namecheap "api_endpoint", DDNSS "password", Linode "api_version", Mail-in-a-Box "password", Netcup "api_password", RFC2136 "key".]]></help>
     </field>
     <field>
         <id>caddy.general.TlsDnsOptionalField2</id>
         <label>DNS API Additional Field 3</label>
         <type>text</type>
-        <help><![CDATA[Leave empty if your DNS Provider isn't specified here. Field can be left empty if optional: Route53 "aws_profile", ACME-DNS "server_url", Azure "subscription_id", OVH "consumer_key", Namecheap "client_ip", DDNS "password".]]></help>
+        <help><![CDATA[Leave empty if your DNS Provider isn't specified here. Field can be left empty if optional: Route53 "aws_profile", ACME-DNS "server_url", Azure "subscription_id", OVH "consumer_key", Namecheap "client_ip", DDNS "password", RFC2136 "server".]]></help>
     </field>
     <field>
         <id>caddy.general.TlsDnsOptionalField3</id>
diff --git a/www/caddy/src/opnsense/mvc/app/models/OPNsense/Caddy/Caddy.xml b/www/caddy/src/opnsense/mvc/app/models/OPNsense/Caddy/Caddy.xml
index 4177a5dc5..49e1aa122 100644
--- a/www/caddy/src/opnsense/mvc/app/models/OPNsense/Caddy/Caddy.xml
+++ b/www/caddy/src/opnsense/mvc/app/models/OPNsense/Caddy/Caddy.xml
@@ -46,6 +46,8 @@
                     <dinahosting>Dinahosting</dinahosting>
                     <hexonet>Hexonet</hexonet>
                     <mailinabox>Mail-in-a-Box</mailinabox>
+                    <netcup>Netcup</netcup>
+                    <rfc2136>RFC2136</rfc2136>
                 </OptionValues>
             </TlsDnsProvider>
             <TlsDnsApiKey type="TextField"/>
diff --git a/www/caddy/src/opnsense/service/templates/OPNsense/Caddy/Caddyfile b/www/caddy/src/opnsense/service/templates/OPNsense/Caddy/Caddyfile
index 76e5a6d27..ca403c57a 100644
--- a/www/caddy/src/opnsense/service/templates/OPNsense/Caddy/Caddyfile
+++ b/www/caddy/src/opnsense/service/templates/OPNsense/Caddy/Caddyfile
@@ -143,7 +143,7 @@
 
     {% if dnsProvider and dnsProvider != "acmedns" and dynDnsDomains|length > 0 %}
         dynamic_dns {
-            {% if dnsProvider in ['porkbun', 'desec', 'route53', 'googleclouddns', 'azure', 'ovh', 'namecheap', 'powerdns', 'ddnss', 'linode', 'tencentcloud', 'dinahosting', 'hexonet', 'mailinabox'] %}
+            {% if dnsProvider in ['porkbun', 'desec', 'route53', 'googleclouddns', 'azure', 'ovh', 'namecheap', 'powerdns', 'ddnss', 'linode', 'tencentcloud', 'dinahosting', 'hexonet', 'mailinabox', 'netcup', 'rfc2136'] %}
                 provider {{ dnsProvider }} {
                     {% if dnsProvider == 'porkbun' %}
                         {% if dnsApiKey %}api_key {{ dnsApiKey }}
@@ -238,6 +238,22 @@
                         {% endif %}
                         {% if dnsOptionalField1 %}password {{ dnsOptionalField1 }}
                         {% endif %}
+                    {% elif dnsProvider == 'netcup' %}
+                        {% if dnsApiKey %}customer_number {{ dnsApiKey }}
+                        {% endif %}
+                        {% if dnsSecretApiKey %}api_key {{ dnsSecretApiKey }}
+                        {% endif %}
+                        {% if dnsOptionalField1 %}api_password {{ dnsOptionalField1 }}
+                        {% endif %}
+                    {% elif dnsProvider == 'rfc2136' %}
+                        {% if dnsApiKey %}key_name {{ dnsApiKey }}
+                        {% endif %}
+                        {% if dnsSecretApiKey %}key_alg {{ dnsSecretApiKey }}
+                        {% endif %}
+                        {% if dnsOptionalField1 %}key {{ dnsOptionalField1 }}
+                        {% endif %}
+                        {% if dnsOptionalField2 %}server {{ dnsOptionalField2 }}
+                        {% endif %}
                     {% endif %}
                 }
             {% else %}
@@ -342,7 +358,7 @@
 #}
 {% macro tls_configuration(dnsProvider, dnsApiKey, customCert, dnsChallenge, dnsSecretApiKey, TlsDnsOptionalField1, TlsDnsOptionalField2, TlsDnsOptionalField3, TlsDnsOptionalField4) %}
     {% if dnsChallenge == "1" and dnsProvider %}
-        {% if dnsProvider in ['duckdns', 'porkbun', 'desec', 'route53', 'acmedns', 'googleclouddns', 'azure', 'ovh', 'namecheap', 'powerdns', 'ddnss', 'linode', 'tencentcloud', 'dinahosting', 'hexonet', 'mailinabox'] %}
+        {% if dnsProvider in ['duckdns', 'porkbun', 'desec', 'route53', 'acmedns', 'googleclouddns', 'azure', 'ovh', 'namecheap', 'powerdns', 'ddnss', 'linode', 'tencentcloud', 'dinahosting', 'hexonet', 'mailinabox', 'netcup', 'rfc2136'] %}
             tls {
                 dns {{ dnsProvider }} {
                     {% if dnsProvider == 'duckdns' %}
@@ -452,6 +468,22 @@
                         {% endif %}
                         {% if dnsOptionalField1 %}password {{ dnsOptionalField1 }}
                         {% endif %}
+                    {% elif dnsProvider == 'netcup' %}
+                        {% if dnsApiKey %}customer_number {{ dnsApiKey }}
+                        {% endif %}
+                        {% if dnsSecretApiKey %}api_key {{ dnsSecretApiKey }}
+                        {% endif %}
+                        {% if dnsOptionalField1 %}api_password {{ dnsOptionalField1 }}
+                        {% endif %}
+                    {% elif dnsProvider == 'rfc2136' %}
+                        {% if dnsApiKey %}key_name {{ dnsApiKey }}
+                        {% endif %}
+                        {% if dnsSecretApiKey %}key_alg {{ dnsSecretApiKey }}
+                        {% endif %}
+                        {% if dnsOptionalField1 %}key {{ dnsOptionalField1 }}
+                        {% endif %}
+                        {% if dnsOptionalField2 %}server {{ dnsOptionalField2 }}
+                        {% endif %}
                     {% endif %}
                 }
             }