diff --git a/backend/routers/router_test.go b/backend/routers/router_test.go
index 9075874..8952d23 100644
--- a/backend/routers/router_test.go
+++ b/backend/routers/router_test.go
@@ -43,10 +43,13 @@ func TestCriticalRoutes(t *testing.T) {
 		{"GET", "/api/v1/alerts/channels"},
 		{"POST", "/api/v1/alerts/check"},
 		{"GET", "/api/v1/alerts/deliveries"},
-		// 审计 / 自检 / 备份
+		// 审计 / 自检
 		{"GET", "/api/v1/audit-logs"},
 		{"GET", "/api/v1/system/self-check"},
-		{"GET", "/api/v1/system/backup"},
+		// 设置类：保留期必须同时有读和写（写要管理员）
+		{"GET", "/api/v1/settings/retention"},
+		{"PUT", "/api/v1/settings/retention"},
+		// 备份恢复接口已在上游被移除（commit f87fb4b），这里不再断言
 	}
 
 	registered := map[string]bool{}