diff --git a/README.md b/README.md
index b17c5915b..90373099c 100644
--- a/README.md
+++ b/README.md
@@ -106,6 +106,7 @@ docker ps # 查看当前运行的容器状态
 | 2022-02-25 | 支持PyPy2、PyPy3、JavaScript V8、JavaScript Node、PHP        | Himit_ZH       |
 | 2022-03-12 | 后端接口全部重构，赛外榜单增加缓存                           | Himit_ZH       |
 | 2022-03-28 | 合并冷蕴提交的团队功能                                       | Himit_ZH、冷蕴 |
+| 2022-04-01 | 正式上线团队功能                                             | Himit_ZH、冷蕴 |
 
 ## 五、部分截图
 
diff --git a/hoj-springboot/DataBackup/src/main/java/top/hcode/hoj/manager/admin/contest/AdminContestManager.java b/hoj-springboot/DataBackup/src/main/java/top/hcode/hoj/manager/admin/contest/AdminContestManager.java
index 99de96cc2..f58ffb28b 100644
--- a/hoj-springboot/DataBackup/src/main/java/top/hcode/hoj/manager/admin/contest/AdminContestManager.java
+++ b/hoj-springboot/DataBackup/src/main/java/top/hcode/hoj/manager/admin/contest/AdminContestManager.java
@@ -98,7 +98,11 @@ public void deleteContest(Long cid) throws StatusFailException {
     public void addContest(AdminContestVo adminContestVo) throws StatusFailException {
         Contest contest = BeanUtil.copyProperties(adminContestVo, Contest.class, "starAccount");
         JSONObject accountJson = new JSONObject();
-        accountJson.set("star_account", adminContestVo.getStarAccount());
+        if (adminContestVo.getStarAccount() == null) {
+            accountJson.set("star_account", new ArrayList<>());
+        } else {
+            accountJson.set("star_account", adminContestVo.getStarAccount());
+        }
         contest.setStarAccount(accountJson.toString());
         boolean isOk = contestEntityService.save(contest);
         if (!isOk) { // 删除成功
diff --git a/hoj-vue/src/components/oj/common/NavBar.vue b/hoj-vue/src/components/oj/common/NavBar.vue
index aa2f85bf5..77dd3aa7a 100644
--- a/hoj-vue/src/components/oj/common/NavBar.vue
+++ b/hoj-vue/src/components/oj/common/NavBar.vue
@@ -56,7 +56,7 @@
             class="fa fa-users"
             style="margin-right: 5px;width: 24px;text-align: center;"
           ></i
-          >{{ $t('m.NavBar_Group') }}(beta)</el-menu-item
+          >{{ $t('m.NavBar_Group') }}</el-menu-item
         >
 
         <el-submenu index="about">
@@ -483,9 +483,7 @@
             <mu-list-item-action>
               <mu-icon value=":fa fa-users" size="24"></mu-icon>
             </mu-list-item-action>
-            <mu-list-item-title
-              >{{ $t('m.NavBar_Group') }}(beta)</mu-list-item-title
-            >
+            <mu-list-item-title>{{ $t('m.NavBar_Group') }}</mu-list-item-title>
           </mu-list-item>
 
           <mu-list-item