diff --git a/test/sftp_explorer_test.dart b/test/sftp_explorer_test.dart
index 7bf9115..82a6dee 100644
--- a/test/sftp_explorer_test.dart
+++ b/test/sftp_explorer_test.dart
@@ -32,8 +32,10 @@ void main() {
     }
   });
 
-  Future<void> settle(WidgetTester tester, bool Function() done, {int rounds = 300}) async {
-    for (var i = 0; i < rounds; i++) {
+  // 횟수가 아니라 실제 시간으로 기다린다 (전체 시험이 함께 돌아 무거우면 paramiko 서버의 키 교환이 몇십 초 걸린다 - 관리자 지적 10/18)
+  Future<void> settle(WidgetTester tester, bool Function() done, {Duration limit = const Duration(seconds: 90)}) async {
+    final end = DateTime.now().add(limit);
+    while (DateTime.now().isBefore(end)) {
       await tester.runAsync(() => Future<void>.delayed(const Duration(milliseconds: 30)));
       await tester.pump();
       if (done()) break;
diff --git a/test/support/sftp_server.dart b/test/support/sftp_server.dart
index bacde6d..c852208 100644
--- a/test/support/sftp_server.dart
+++ b/test/support/sftp_server.dart
@@ -41,8 +41,19 @@ class SftpTestServer {
     ]);
     final lines = pr.stdout.transform(utf8.decoder).transform(const LineSplitter()).asBroadcastStream();
     pr.stderr.drain<void>();
-    final port = int.parse((await lines.firstWhere((l) => l.startsWith('PORT '))).split(' ')[1]);
-    final fp = (await lines.firstWhere((l) => l.startsWith('FINGERPRINT '))).split(' ')[1];
+    final port = int.parse((await lines.firstWhere((l) => l.startsWith('PORT ')).timeout(const Duration(seconds: 60))).split(' ')[1]);
+    final fp = (await lines.firstWhere((l) => l.startsWith('FINGERPRINT ')).timeout(const Duration(seconds: 30))).split(' ')[1];
+    // 무거울 때도 포트가 연결을 받는 것을 본 뒤에 시작한다 (관리자 지적 10/18)
+    final end = DateTime.now().add(const Duration(seconds: 30));
+    while (true) {
+      try {
+        (await Socket.connect('127.0.0.1', port, timeout: const Duration(seconds: 2))).destroy();
+        break;
+      } on SocketException {
+        if (DateTime.now().isAfter(end)) rethrow;
+        await Future<void>.delayed(const Duration(milliseconds: 200));
+      }
+    }
     return SftpTestServer._(pr, port, fp);
   }