diff --git a/src/components/pages/serverSettings/parts/Domains.tsx b/src/components/pages/serverSettings/parts/Domains.tsx
index 4e54f8ad..54747faa 100644
--- a/src/components/pages/serverSettings/parts/Domains.tsx
+++ b/src/components/pages/serverSettings/parts/Domains.tsx
@@ -7,7 +7,7 @@ import { useNavigate } from 'react-router-dom';
 import { settingsOnSubmit } from '../settingsOnSubmit';
 
 const DOMAIN_REGEX =
-  /^[a-zA-Z0-9][a-zA-Z0-9-_]{0,61}[a-zA-Z0-9]{0,1}\.([a-zA-Z]{1,6}|[a-zA-Z0-9-]{1,30}\.[a-zA-Z]{2,3})$/gim;
+  /^[a-zA-Z0-9][a-zA-Z0-9-_]{0,61}[a-zA-Z0-9]{0,1}\.([a-zA-Z]{1,6}|[a-zA-Z0-9-]{1,30}\.[a-zA-Z]{2,30})$/gim;
 
 export default function Domains({
   swr: { data, isLoading },
diff --git a/src/server/routes/api/server/settings/index.ts b/src/server/routes/api/server/settings/index.ts
index 942a6bc3..654188f3 100644
--- a/src/server/routes/api/server/settings/index.ts
+++ b/src/server/routes/api/server/settings/index.ts
@@ -321,7 +321,7 @@ export default fastifyPlugin(
                 z
                   .string()
                   .regex(
-                    /^[a-zA-Z0-9][a-zA-Z0-9-_]{0,61}[a-zA-Z0-9]{0,1}\.([a-zA-Z]{1,6}|[a-zA-Z0-9-]{1,30}\.[a-zA-Z]{2,3})$/gi,
+                    /^[a-zA-Z0-9][a-zA-Z0-9-_]{0,61}[a-zA-Z0-9]{0,1}\.([a-zA-Z]{1,6}|[a-zA-Z0-9-]{1,30}\.[a-zA-Z]{2,30})$/gi,
                     'Invalid Domain',
                   ),
               ),