diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index 0b0d5e21..2ea0683e 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.21.9",
+    "version": "2.21.10",
     "bin": "bin/hydrooj.js",
     "main": "dist/loader.js",
     "typings": "dist/loader.d.ts",
diff --git a/packages/hydrooj/src/handler/record.ts b/packages/hydrooj/src/handler/record.ts
index 5465c8d0..6b30042d 100644
--- a/packages/hydrooj/src/handler/record.ts
+++ b/packages/hydrooj/src/handler/record.ts
@@ -7,6 +7,7 @@ import problem from '../model/problem';
 import record from '../model/record';
 import * as contest from '../model/contest';
 import user from '../model/user';
+import TaskModel from '../model/task';
 import paginate from '../lib/paginate';
 import * as bus from '../service/bus';
 import {
@@ -66,7 +67,10 @@ class RecordListHandler extends RecordHandler {
             filterUidOrName: uidOrName,
         };
         if (this.user.hasPriv(PRIV.PRIV_VIEW_JUDGE_STATISTICS)) {
-            this.response.body.statistics = await record.stat(all ? undefined : domainId);
+            this.response.body.statistics = {
+                ...await record.stat(all ? undefined : domainId),
+                delay: await TaskModel.getDelay({ type: 'judge' }),
+            };
         }
     }
 }
diff --git a/packages/hydrooj/src/model/task.ts b/packages/hydrooj/src/model/task.ts
index a4740288..7bb2e4f7 100644
--- a/packages/hydrooj/src/model/task.ts
+++ b/packages/hydrooj/src/model/task.ts
@@ -48,6 +48,13 @@ class TaskModel {
         return null;
     }
 
+    static async getDelay(query?: FilterQuery<Task>) {
+        const now = new Date();
+        const [res] = await coll.find(query).sort({ executeAfter: 1 }).limit(1).toArray();
+        if (res) return [Math.max(0, now.getTime() - res.executeAfter.getTime()), res.executeAfter];
+        return [0, now];
+    }
+
     static async consume(query: any, cb: Function) {
         let isRunning = false;
         const interval = setInterval(async () => {
diff --git a/packages/ui-default/backendlib/template.js b/packages/ui-default/backendlib/template.js
index 3ebb8b72..2b677e32 100644
--- a/packages/ui-default/backendlib/template.js
+++ b/packages/ui-default/backendlib/template.js
@@ -169,12 +169,13 @@ env.addGlobal('datetimeSpan', misc.datetimeSpan);
 env.addGlobal('paginate', misc.paginate);
 env.addGlobal('size', misc.size);
 env.addGlobal('gravatar', misc.gravatar);
+env.addGlobal('formatSeconds', misc.formatSeconds);
 env.addGlobal('model', global.Hydro.model);
 env.addGlobal('ui', global.Hydro.ui);
 env.addGlobal('isIE', (str) => str.includes('MSIE') || str.includes('rv:11.0'));
 env.addGlobal('set', (obj, key, val) => {
   if (val !== undefined) obj[key] = val;
-  else obj = { ...obj, key };
+  else Object.assign(obj, key);
   return '';
 });
 env.addGlobal('findSubModule', (prefix) => {
diff --git a/packages/ui-default/package.json b/packages/ui-default/package.json
index 9d06361d..502fbdec 100644
--- a/packages/ui-default/package.json
+++ b/packages/ui-default/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.5.7",
+  "version": "4.5.8",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",
diff --git a/packages/ui-default/templates/record_main.html b/packages/ui-default/templates/record_main.html
index e1f79267..b167ab2d 100644
--- a/packages/ui-default/templates/record_main.html
+++ b/packages/ui-default/templates/record_main.html
@@ -93,6 +93,7 @@
       </div>
       <div class="section__body">
         <dl class="large horizontal">
+          <dt>{{ _('Delay')}}</dt><dd>{{ formatSeconds(statistics.delay[0] / 1000) }}</dd>
           <dt>{{ _('5 Min')}}</dt><dd>{{ statistics['d5min'] }}</dd>
           <dt>{{ _('1 Hour')}}</dt><dd>{{ statistics['d1h'] }}</dd>
           <dt>{{ _('Day') }}</dt><dd>{{ statistics['day'] }}</dd>