diff --git a/web/app/models/UOJContest.php b/web/app/models/UOJContest.php
index 2fd0ad7..e7496d9 100644
--- a/web/app/models/UOJContest.php
+++ b/web/app/models/UOJContest.php
@@ -17,15 +17,15 @@ class UOJContest {
 		return new UOJContest($info);
 	}
 
-	public static function queryUpcomingContestIds(array $user = null, $limit = -1) {
-		return array_map(fn ($x) => $x['id'], DB::selectAll([
+	public static function queryUpcomingContests(array $user = null, $limit = -1) {
+		return array_filter(array_map(fn ($x) => UOJContest::query($x['id']), DB::selectAll([
 			"select id from contests",
 			"where", [
 				"status" => "unfinished",
 			],
 			"order by start_time asc, id asc",
 			$limit == -1 ? "" : DB::limit($limit),
-		]));
+		])), fn ($contest) => $contest->userCanView($user));
 	}
 
 	public static function userCanManageSomeContest(array $user = null) {
diff --git a/web/app/views/sidebar.php b/web/app/views/sidebar.php
index efc7f80..956c64a 100644
--- a/web/app/views/sidebar.php
+++ b/web/app/views/sidebar.php
@@ -63,14 +63,13 @@ $parsedown = HTML::parsedown();
 
 <?php if (Auth::check()) : ?>
 	<?php if (!isset($upcoming_contests_hidden)) : ?>
-		<?php $upcoming_contests = UOJContest::queryUpcomingContestIds(Auth::user(), 5); ?>
+		<?php $upcoming_contests = UOJContest::queryUpcomingContests(Auth::user(), 5); ?>
 		<div class="card card-default mb-2" id="group-user-announcements">
 			<div class="card-header fw-bold bg-transparent">
 				近期比赛
 			</div>
 			<ul class="list-group list-group-flush">
-				<?php foreach ($upcoming_contests as $id) : ?>
-					<?php $contest = UOJContest::query($id); ?>
+				<?php foreach ($upcoming_contests as $contest) : ?>
 					<?php if ($contest->info['cur_progress'] == CONTEST_NOT_STARTED || $contest->info['cur_progress'] == CONTEST_IN_PROGRESS) : ?>
 						<li class="list-group-item text-center">
 							<?= $contest->getLink(['class' => 'fw-bold']) ?>