diff --git a/packages/ui-default/backendlib/markdown-it-xss.js b/packages/ui-default/backendlib/markdown-it-xss.js
index 018f51faf..44098228b 100644
--- a/packages/ui-default/backendlib/markdown-it-xss.js
+++ b/packages/ui-default/backendlib/markdown-it-xss.js
@@ -62,6 +62,7 @@ const xss = new Xss.FilterXSS({
         tt: [],
         u: [],
         ul: [],
+        var: [],
         video: ['autoplay', 'controls', 'loop', 'preload', 'src', 'height', 'width'],
     },
 });
diff --git a/packages/ui-default/package.json b/packages/ui-default/package.json
index c71279afc..6fa8c1974 100644
--- a/packages/ui-default/package.json
+++ b/packages/ui-default/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.12.4",
+  "version": "4.12.5",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",