diff --git a/packages/hydrooj/src/handler/contest.ts b/packages/hydrooj/src/handler/contest.ts
index ae36fcb2d..2eac35757 100644
--- a/packages/hydrooj/src/handler/contest.ts
+++ b/packages/hydrooj/src/handler/contest.ts
@@ -280,7 +280,6 @@ export class ContestScoreboardHandler extends ContestDetailBaseHandler {
             config.lockAt = this.tdoc.lockAt;
         }
         const [, rows, udict, pdict] = await contest.getScoreboard.call(this, domainId, tid, config);
-        this.response.template = 'contest_scoreboard.html';
         // eslint-disable-next-line @typescript-eslint/naming-convention
         const page_name = this.tdoc.rule === 'homework'
             ? 'homework_scoreboard'
@@ -288,6 +287,8 @@ export class ContestScoreboardHandler extends ContestDetailBaseHandler {
         this.response.body = {
             tdoc: this.tdoc, rows, udict, pdict, page_name,
         };
+        this.response.pjax = 'partials/scoreboard.html';
+        this.response.template = 'contest_scoreboard.html';
     }
 
     async exportGhost(domainId: string, tid: ObjectId) {
diff --git a/packages/ui-default/pages/contest_scoreboard.page.ts b/packages/ui-default/pages/contest_scoreboard.page.ts
index 3ea594b30..ebdc4a6e4 100644
--- a/packages/ui-default/pages/contest_scoreboard.page.ts
+++ b/packages/ui-default/pages/contest_scoreboard.page.ts
@@ -1,5 +1,6 @@
 import $ from 'jquery';
 import { NamedPage } from 'vj/misc/Page';
+import { pjax } from 'vj/utils';
 
 const page = new NamedPage('contest_scoreboard', () => {
   const { tdoc } = UiContext;
@@ -34,6 +35,15 @@ const page = new NamedPage('contest_scoreboard', () => {
       $('.rank--unrank').closest('tr').hide();
     }
   });
+
+  const beginAt = new Date(UiContext.tdoc.beginAt).getTime();
+  const endAt = new Date(UiContext.tdoc.endAt).getTime();
+  function updateScoreboard() {
+    const now = Date.now();
+    if (beginAt <= now && now <= endAt) pjax.request(UiContext.scoreboardUrl || '', { push: false });
+  }
+
+  setInterval(updateScoreboard, 180000);
 });
 
 export default page;
diff --git a/packages/ui-default/templates/contest_scoreboard.html b/packages/ui-default/templates/contest_scoreboard.html
index cb24abb74..0cc046569 100644
--- a/packages/ui-default/templates/contest_scoreboard.html
+++ b/packages/ui-default/templates/contest_scoreboard.html
@@ -3,13 +3,6 @@
 {{ set(UiContext, 'tdoc', tdoc) }}
 {% set type = 'homework' if tdoc.rule == 'homework' else 'contest' %}
 
-{% macro renderRecord(cell, canView) %}
-  <a href="{{ url('record_detail', rid=cell.raw) if canView else '' }}"{% if cell.hover %} data-tooltip="{{ cell.hover }}"{% endif %}>
-    {%- set _color = utils.status.getScoreColor(cell.score|default(cell.value)) -%}
-    <span style="font-weight:bold;color:{{ _color }}">{{ cell.value|string|nl2br|safe }}</span>
-  </a>
-{% endmacro %}
-
 {% block content %}
 <div class="row"><div class="medium-12 columns scoreboard--{{ tdoc.rule }}">
   <div class="section visible">
@@ -35,82 +28,7 @@
         </select>
       </div>
     </div>
-    {% if model.contest.isLocked(tdoc) %}
-      <div class="section__body no-padding">
-        <blockquote class="note">
-          {{ _('The scoreboard was frozen with {0} minutes remaining at {1} - submissions in the last {0} minutes of the contest are still shown as pending.').format((tdoc.endAt - tdoc.lockAt) / 1000 / 60, datetimeSpan(tdoc.lockAt))|safe }}
-        </blockquote>
-      </div>
-    {% elif model.contest.isDone(tdoc) and tdoc.lockAt and not tdoc.unlocked %}
-      <div class="section__body no-padding">
-        <blockquote class="note">
-          {{ _('Please wait until contest host unfreeze the scoreboard.') }}
-        </blockquote>
-      </div>
-    {% endif %}
-    <div class="section__body no-padding overflow-hidden-horizontal">
-      <table class="data-table">
-        <colgroup>
-        {%- for column in rows[0] -%}
-          <col class="col--{{ column.type }}">
-        {%- endfor -%}
-        </colgroup>
-        <thead>
-          <tr>
-          {%- for column in rows[0] -%}
-            <th class="col--{{ column.type }}">
-            {%- if column.type == 'problem' and column.raw -%}
-              <a href="{{ url('problem_detail', pid=column.raw, query={tid:tdoc.docId}) }}" data-tooltip="{{ pdict[column.raw].title }}">
-                {{ column.value }}<br />{{ pdict[column.raw].nAccept|default(0) }}/{{ pdict[column.raw].nSubmit|default(0) }}
-              </a>
-            {%- else -%}
-              {{ column.value|string|nl2br|safe }}
-            {%- endif -%}
-            </th>
-          {%- endfor -%}
-          </tr>
-        </thead>
-        <tbody>
-        {%- set canViewAll = handler.user.own(tdoc) or model.contest.canShowRecord.call(handler, tdoc) -%}
-        {%- for row in rows -%}{%- if loop.index0 > 0 -%}
-          <tr>
-            {%- for column in row -%}
-              <td class="col--{{ rows[0][loop.index0]['type'] }}"{% if column.style %} style="{{ column.style }}"{% endif %}>
-              {%- if column.type == 'rank' -%}
-                <span class="{{ 'rank--unrank' if column.value == '0' else 'rank--normal' }}">{{ '*' if column.value == '0' else column.value|string|nl2br|safe }}</span>
-              {%- elif column.type == 'user' -%}
-                {%- set canView = canViewAll or handler.user._id == column.raw -%}
-                <button class="star user--{{ column.raw }}" data-uid="{{ column.raw }}">
-                  <span class="starred--hide"><span class="icon icon-star--outline" data-tooltip="{{ _('Star') }}"></span></span>
-                  <span class="starred--show"><span class="icon icon-star" data-tooltip="{{ _('Unstar') }}"></span></span>
-                </button>
-                {{ user.render_inline(udict[column.raw], badge=false) }}
-              {%- elif column.type == 'record' and column.raw -%}
-                <a href="{{ url('record_detail', rid=column.raw) if canView else '' }}" data-tooltip="{{ column.hover }}">
-                  <span style="font-weight:bold;color:{{ utils.status.getScoreColor(column.score|default(column.value)) }}">{{ column.value|string|nl2br|safe }}</span>
-                </a>
-              {%- elif column.type == 'records' -%}
-                {%- for record in column.raw -%}
-                  {%- if loop.index0 -%}/{%- endif -%}
-                  {%- if record.raw -%}
-                    <a href="{{ url('record_detail', rid=record.raw) if canView else '' }}">
-                      {%- set _color = utils.status.getScoreColor(record.score|default(record.value)) -%}
-                      <span style="font-weight:bold;color:{{ _color }}">{{ record.value|string|nl2br|safe }}</span>
-                    </a>
-                  {%- else -%}
-                    {{ record.value|string|nl2br|safe }}
-                  {%- endif -%}
-                {%- endfor -%}
-              {%- else -%}
-                <span data-tooltip="{{ column.hover }}">{{ column.value|string|nl2br|safe }}</span>
-              {%- endif -%}
-              </td>
-            {%- endfor -%}
-          </tr>
-        {%- endif -%}{%- endfor -%}
-        </tbody>
-      </table>
-    </div>
+    {% include "partials/scoreboard.html" %}
   </div>
 </div></div>
 {% endblock %}
diff --git a/packages/ui-default/templates/partials/scoreboard.html b/packages/ui-default/templates/partials/scoreboard.html
new file mode 100644
index 000000000..40d4d5767
--- /dev/null
+++ b/packages/ui-default/templates/partials/scoreboard.html
@@ -0,0 +1,86 @@
+{% import "components/user.html" as user with context %}
+{% macro renderRecord(cell, canView) %}
+  <a href="{{ url('record_detail', rid=cell.raw) if canView else '' }}"{% if cell.hover %} data-tooltip="{{ cell.hover }}"{% endif %}>
+    {%- set _color = utils.status.getScoreColor(cell.score|default(cell.value)) -%}
+    <span style="font-weight:bold;color:{{ _color }}">{{ cell.value|string|nl2br|safe }}</span>
+  </a>
+{% endmacro %}
+
+<div data-fragment-id="scoreboard">
+  {% if model.contest.isLocked(tdoc) %}
+    <div class="section__body no-padding">
+      <blockquote class="note">
+        {{ _('The scoreboard was frozen with {0} minutes remaining at {1} - submissions in the last {0} minutes of the contest are still shown as pending.').format((tdoc.endAt - tdoc.lockAt) / 1000 / 60, datetimeSpan(tdoc.lockAt))|safe }}
+      </blockquote>
+    </div>
+  {% elif model.contest.isDone(tdoc) and tdoc.lockAt and not tdoc.unlocked %}
+    <div class="section__body no-padding">
+      <blockquote class="note">
+        {{ _('Please wait until contest host unfreeze the scoreboard.') }}
+      </blockquote>
+    </div>
+  {% endif %}
+  <div class="section__body no-padding overflow-hidden-horizontal">
+    <table class="data-table">
+      <colgroup>
+      {%- for column in rows[0] -%}
+        <col class="col--{{ column.type }}">
+      {%- endfor -%}
+      </colgroup>
+      <thead>
+        <tr>
+        {%- for column in rows[0] -%}
+          <th class="col--{{ column.type }}">
+          {%- if column.type == 'problem' and column.raw -%}
+            <a href="{{ url('problem_detail', pid=column.raw, query={tid:tdoc.docId}) }}" data-tooltip="{{ pdict[column.raw].title }}">
+              {{ column.value }}<br />{{ pdict[column.raw].nAccept|default(0) }}/{{ pdict[column.raw].nSubmit|default(0) }}
+            </a>
+          {%- else -%}
+            {{ column.value|string|nl2br|safe }}
+          {%- endif -%}
+          </th>
+        {%- endfor -%}
+        </tr>
+      </thead>
+      <tbody>
+      {%- set canViewAll = handler.user.own(tdoc) or model.contest.canShowRecord.call(handler, tdoc) -%}
+      {%- for row in rows -%}{%- if loop.index0 > 0 -%}
+        <tr>
+          {%- for column in row -%}
+            <td class="col--{{ rows[0][loop.index0]['type'] }}"{% if column.style %} style="{{ column.style }}"{% endif %}>
+            {%- if column.type == 'rank' -%}
+              <span class="{{ 'rank--unrank' if column.value == '0' else 'rank--normal' }}">{{ '*' if column.value == '0' else column.value|string|nl2br|safe }}</span>
+            {%- elif column.type == 'user' -%}
+              {%- set canView = canViewAll or handler.user._id == column.raw -%}
+              <button class="star user--{{ column.raw }}" data-uid="{{ column.raw }}">
+                <span class="starred--hide"><span class="icon icon-star--outline" data-tooltip="{{ _('Star') }}"></span></span>
+                <span class="starred--show"><span class="icon icon-star" data-tooltip="{{ _('Unstar') }}"></span></span>
+              </button>
+              {{ user.render_inline(udict[column.raw], badge=false) }}
+            {%- elif column.type == 'record' and column.raw -%}
+              <a href="{{ url('record_detail', rid=column.raw) if canView else '' }}" data-tooltip="{{ column.hover }}">
+                <span style="font-weight:bold;color:{{ utils.status.getScoreColor(column.score|default(column.value)) }}">{{ column.value|string|nl2br|safe }}</span>
+              </a>
+            {%- elif column.type == 'records' -%}
+              {%- for record in column.raw -%}
+                {%- if loop.index0 -%}/{%- endif -%}
+                {%- if record.raw -%}
+                  <a href="{{ url('record_detail', rid=record.raw) if canView else '' }}">
+                    {%- set _color = utils.status.getScoreColor(record.score|default(record.value)) -%}
+                    <span style="font-weight:bold;color:{{ _color }}">{{ record.value|string|nl2br|safe }}</span>
+                  </a>
+                {%- else -%}
+                  {{ record.value|string|nl2br|safe }}
+                {%- endif -%}
+              {%- endfor -%}
+            {%- else -%}
+              <span data-tooltip="{{ column.hover }}">{{ column.value|string|nl2br|safe }}</span>
+            {%- endif -%}
+            </td>
+          {%- endfor -%}
+        </tr>
+      {%- endif -%}{%- endfor -%}
+      </tbody>
+    </table>
+  </div>
+</div>
\ No newline at end of file