diff --git a/web/html/xui/common_sider.html b/web/html/xui/common_sider.html
index 13d5bd49..c0532e84 100644
--- a/web/html/xui/common_sider.html
+++ b/web/html/xui/common_sider.html
@@ -31,7 +31,9 @@
     <a-menu :theme="themeSwitcher.currentTheme" mode="inline" selected-keys="">
         <a-menu-item mode="inline">
             <a-icon type="bulb" :theme="themeSwitcher.isDarkTheme ? 'filled' : 'outlined'"></a-icon>
-            <theme-switch />
+            <theme-switch>
+            </theme-switch>
+                <a-checkbox style="padding-left: 1rem;" id="ultraDarkTheme">Ultra</a-checkbox>
         </a-menu-item>
     </a-menu>
     <a-menu :theme="themeSwitcher.currentTheme" mode="inline" :selected-keys="['{{ .request_uri }}']"