diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index 13798dc7..4dc9c788 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.39.19",
+    "version": "2.39.20",
     "bin": "bin/hydrooj.js",
     "main": "src/loader",
     "module": "src/loader",
diff --git a/packages/hydrooj/src/model/setting.ts b/packages/hydrooj/src/model/setting.ts
index bc184d60..ca83abfa 100644
--- a/packages/hydrooj/src/model/setting.ts
+++ b/packages/hydrooj/src/model/setting.ts
@@ -154,6 +154,14 @@ DomainUserSetting(
     Setting('setting_storage', 'level', 0, 'number', 'level', null, FLAG_HIDDEN | FLAG_DISABLED),
 );
 
+const ignoreUA = [
+    'bingbot',
+    'Gatus',
+    'Googlebot',
+    'Uptime',
+    'YandexBot',
+].join('\n');
+
 SystemSetting(
     Setting('setting_file', 'file.endPoint', 'http://127.0.0.1:9000', 'text', 'file.endPoint', 'Storage engine endPoint'),
     Setting('setting_file', 'file.accessKey', null, 'text', 'file.accessKey', 'Storage engine accessKey'),
@@ -182,6 +190,7 @@ SystemSetting(
     Setting('setting_server', 'server.language', 'zh_CN', langRange, 'server.language', 'Default display language'),
     Setting('setting_server', 'server.login', true, 'boolean', 'server.login', 'Allow builtin-login', FLAG_PRO),
     Setting('setting_server', 'server.message', true, 'boolean', 'server.message', 'Allow users send messages'),
+    Setting('setting_server', 'server.ignoreUA', ignoreUA, 'textarea', 'server.ignoreUA', 'ignoredUA'),
     Setting('setting_limits', 'limit.problem_files_max', 100, 'number', 'limit.problem_files_max', 'Max files per problem'),
     Setting('setting_limits', 'limit.problem_files_size_max', 128 * 1024 * 1024, 'number', 'limit.problem_files_size_max', 'Max files size per problem'),
     Setting('setting_limits', 'limit.user_files', 100, 'number', 'limit.user_files', 'Max files for user'),
diff --git a/packages/hydrooj/src/service/server.ts b/packages/hydrooj/src/service/server.ts
index ab0bbfed..0c6a0b28 100644
--- a/packages/hydrooj/src/service/server.ts
+++ b/packages/hydrooj/src/service/server.ts
@@ -620,16 +620,18 @@ export class Handler extends HandlerCommon {
     }
 
     async saveCookie() {
+        const ua = this.request.headers['user-agent'] || '';
+        if (!this.session.uid && system.get('server.ignoreUA').split('\n').filter((i) => i && ua.includes(i)).length) return;
         const expireSeconds = this.session.save
             ? system.get('session.saved_expire_seconds')
             : system.get('session.unsaved_expire_seconds');
         const $update = {
             updateIp: this.request.ip,
-            updateUa: this.request.headers['user-agent'] || '',
+            updateUa: ua,
         };
         const $create = {
             createIp: this.request.ip,
-            createUa: this.request.headers['user-agent'] || '',
+            createUa: ua,
             createHost: this.request.host,
         };
         if (this.session._id) {