diff --git a/www/caddy/Makefile b/www/caddy/Makefile
index 4264cd9b0..ebfe26f13 100644
--- a/www/caddy/Makefile
+++ b/www/caddy/Makefile
@@ -1,5 +1,6 @@
 PLUGIN_NAME=		caddy
 PLUGIN_VERSION=		1.8.0
+PLUGIN_REVISION=	1
 PLUGIN_DEPENDS=		caddy-custom
 PLUGIN_COMMENT=		Modern Reverse Proxy with Automatic HTTPS, Dynamic DNS and Layer4 Routing
 PLUGIN_MAINTAINER=	cedrik@pischem.com
diff --git a/www/caddy/pkg-descr b/www/caddy/pkg-descr
index 65e926dd6..716a22aa4 100644
--- a/www/caddy/pkg-descr
+++ b/www/caddy/pkg-descr
@@ -22,6 +22,7 @@ Plugin Changelog
          dinahosting, civo, easydns, hosttech; must be added via https://caddyserver.com/docs/command-line#caddy-add-package
 * Cleanup: Refactor caddy.inc and add syslog function, change name from Caddy Web Server to Caddy (opnsense/plugins/issues/4426)
 * Cleanup: Some small UI tweaks (opnsense/plugins/pull/4442)
+* Change: Disable HTTP/3 to mitigate status 400 issue when reverse proxying the OPNsense WebGUI (opnsense/plugins/issues/4471)
 
 1.7.6
 
diff --git a/www/caddy/src/opnsense/mvc/app/controllers/OPNsense/Caddy/forms/general.xml b/www/caddy/src/opnsense/mvc/app/controllers/OPNsense/Caddy/forms/general.xml
index 488c9aeb2..60d604eaf 100644
--- a/www/caddy/src/opnsense/mvc/app/controllers/OPNsense/Caddy/forms/general.xml
+++ b/www/caddy/src/opnsense/mvc/app/controllers/OPNsense/Caddy/forms/general.xml
@@ -33,10 +33,10 @@
             <help><![CDATA[Run this service as "www" user and group, instead of "root". This setting increases security, but comes with the hard restriction that the well-known port range can not be used anymore. After enabling and saving this setting, the service has to be totally restarted. For this, please disable Caddy and press Apply. Afterwards enable Caddy and press Apply. This setting is reversible by following the same steps.]]></help>
         </field>
         <field>
-            <id>caddy.general.HttpVersion</id>
-            <label>HTTP Version</label>
+            <id>caddy.general.HttpVersions</id>
+            <label>HTTP Versions</label>
             <type>select_multiple</type>
-            <help><![CDATA[Select the HTTP Version for the frontend listeners. By default, QUIC (HTTP/3) is enabled. This means, UDP/443 will be used by Caddy. To free this protocol port combination for a different service, choose a different combination of protocols that does not include HTTP/3.]]></help>
+            <help><![CDATA[Select the HTTP versions for the frontend listeners. By default, QUIC (HTTP/3) is disabled.]]></help>
         </field>
         <field>
             <id>caddy.general.HttpPort</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 5fd4bf000..70f09cc37 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
@@ -1,7 +1,7 @@
 <model>
     <mount>//Pischem/caddy</mount>
     <description>Caddy Reverse Proxy</description>
-    <version>1.3.3</version>
+    <version>1.3.4</version>
     <items>
         <general>
             <enabled type="BooleanField">
@@ -98,16 +98,16 @@
                 <ValidationMessage>Please enter a valid Grace Period between 1 and 20 seconds.</ValidationMessage>
                 <Required>Y</Required>
             </GracePeriod>
-            <HttpVersion type="OptionField">
+            <HttpVersions type="OptionField">
                 <Required>Y</Required>
-                <Default>h1,h2,h3</Default>
+                <Default>h1,h2</Default>
                 <Multiple>Y</Multiple>
                 <OptionValues>
                     <h1>HTTP/1.1</h1>
                     <h2>HTTP/2</h2>
                     <h3>HTTP/3</h3>
                 </OptionValues>
-            </HttpVersion>
+            </HttpVersions>
             <LogCredentials type="BooleanField"/>
             <LogAccessPlain type="BooleanField"/>
             <LogAccessPlainKeep type="IntegerField">
diff --git a/www/caddy/src/opnsense/service/templates/OPNsense/Caddy/Caddyfile b/www/caddy/src/opnsense/service/templates/OPNsense/Caddy/Caddyfile
index 320eb8619..1e452f62c 100644
--- a/www/caddy/src/opnsense/service/templates/OPNsense/Caddy/Caddyfile
+++ b/www/caddy/src/opnsense/service/templates/OPNsense/Caddy/Caddyfile
@@ -81,7 +81,7 @@
     {% endif %}
 
     servers {
-        protocols {{ generalSettings.HttpVersion.split(',') | join(' ') }}
+        protocols {{ generalSettings.HttpVersions.split(',') | join(' ') }}
         {% if accessList %}
             trusted_proxies static {{ accessList.clientIps.split(',') | join(' ') }}
         {% endif %}