diff --git a/packages/ui-default/backendlib/markdown-it-xss.js b/packages/ui-default/backendlib/markdown-it-xss.js
index c695c9232..018f51faf 100644
--- a/packages/ui-default/backendlib/markdown-it-xss.js
+++ b/packages/ui-default/backendlib/markdown-it-xss.js
@@ -24,13 +24,13 @@ const xss = new Xss.FilterXSS({
         dd: [],
         del: ['datetime'],
         details: ['open'],
-        div: [],
+        div: ['class'],
         dl: [],
         dt: [],
         em: [],
         font: ['color', 'size', 'face'],
         h1: [],
-        h2: [],
+        h2: ['class'],
         h3: [],
         h4: [],
         h5: [],
diff --git a/packages/ui-default/package.json b/packages/ui-default/package.json
index 34f687893..3e8b2df53 100644
--- a/packages/ui-default/package.json
+++ b/packages/ui-default/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.11.38",
+  "version": "4.11.39",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",