diff --git a/src/App/Service/IPListService.php b/src/App/Service/IPListService.php
index eeafe03..e7ae100 100644
--- a/src/App/Service/IPListService.php
+++ b/src/App/Service/IPListService.php
@@ -30,7 +30,8 @@ class IPListService {
         }
         foreach (scandir($dir) as $file) {
             if (str_ends_with($file, '.json')) {
-                $this->loadConfig(substr($file, 0, -5), json_decode(file_get_contents($dir . $file)));
+                $name = substr($file, 0, -5);
+                $this->loadConfig($name, json_decode(file_get_contents($dir . $file)));
             }
         }
     }
@@ -44,6 +45,11 @@ class IPListService {
         return self::$_instance ??= new self($logger);
     }
 
+    /**
+     * @param string $name
+     * @param object $config
+     * @return void
+     */
     private function loadConfig(string $name, object $config): void {
         $this->sites[$name] = SiteFactory::create($name, $config);
     }
diff --git a/src/Domain/Entity/Site.php b/src/Domain/Entity/Site.php
index e5cff26..3f30116 100644
--- a/src/Domain/Entity/Site.php
+++ b/src/Domain/Entity/Site.php
@@ -62,6 +62,7 @@ final class Site {
         $this->ip4 = SiteFactory::normalize(array_merge($this->ip4, $ip4));
         $this->ip6 = SiteFactory::normalize(array_merge($this->ip6, $ip6));
 
+        $this->saveConfig();
         App::getLogger()->debug('Reloaded for ' . $this->name);
 
         EventLoop::delay($this->timeout, function () {
@@ -112,4 +113,30 @@ final class Site {
 
         App::getLogger()->debug('External reloaded for ' . $this->name);
     }
+
+    /**
+     * @return object
+     */
+    public function getConfig(): object {
+        return (object) [
+            'domains' => SiteFactory::normalizeArray($this->domains),
+            'dns' => $this->dns,
+            'timeout' => $this->timeout,
+            'ip4' => SiteFactory::normalizeArray($this->ip4, true),
+            'ip6' => SiteFactory::normalizeArray($this->ip6, true),
+            'cidr4' => SiteFactory::normalizeArray($this->cidr4, true),
+            'cidr6' => SiteFactory::normalizeArray($this->cidr6, true),
+            'external' => $this->external,
+        ];
+    }
+
+    /**
+     * @return void
+     */
+    private function saveConfig(): void {
+        file_put_contents(
+            PATH_ROOT . '/config/' . $this->name . '.json',
+            json_encode($this->getConfig(), JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE)
+        );
+    }
 }