diff --git a/integration_test/cef_dns_real_test.dart b/integration_test/cef_dns_real_test.dart
index e5f74d2..b46952c 100644
--- a/integration_test/cef_dns_real_test.dart
+++ b/integration_test/cef_dns_real_test.dart
@@ -34,7 +34,7 @@ void main() {
     }
     CefRuntime.rememberStartState();
     expect(CefRuntime.readyThisRun, isTrue);
-    final data = Platform.environment['JJ_MKVMAKER_DATA'] ?? testTempDir('jj_cef_real_').path;
+    final data = Platform.environment['JJ_MKVMAKER_DATA'] ?? testTempDir('jj_cef_real_', heldByApp: true).path;
     Directory(data).createSync(recursive: true);
     final c = AppController(PlatformServices(mediaTool: ProcessMediaTool('x', 'y'), storage: DesktopStorageService()));
     c.settings
diff --git a/integration_test/dns_block_real_test.dart b/integration_test/dns_block_real_test.dart
index f38fd6b..61bfe2e 100644
--- a/integration_test/dns_block_real_test.dart
+++ b/integration_test/dns_block_real_test.dart
@@ -21,7 +21,7 @@ void main() {
   IntegrationTestWidgetsFlutterBinding.ensureInitialized();
 
   testWidgets('250: 닿지 않는 DNS → 브라우저에 앱 덮개 (Edge 실제)', (tester) async {
-    final data = Platform.environment['JJ_MKVMAKER_DATA'] ?? testTempDir('jj_dns_block_').path;
+    final data = Platform.environment['JJ_MKVMAKER_DATA'] ?? testTempDir('jj_dns_block_', heldByApp: true).path;
     Directory(data).createSync(recursive: true);
     final c = AppController(PlatformServices(mediaTool: ProcessMediaTool('x', 'y'), storage: DesktopStorageService()));
     c.settings
diff --git a/integration_test/tor_dns_real_test.dart b/integration_test/tor_dns_real_test.dart
index 7570d25..ab3ee8b 100644
--- a/integration_test/tor_dns_real_test.dart
+++ b/integration_test/tor_dns_real_test.dart
@@ -27,7 +27,7 @@ void main() {
   IntegrationTestWidgetsFlutterBinding.ensureInitialized();
 
   testWidgets('DNS 강제 · Tor 화면 실제 연결', (tester) async {
-    final data = Platform.environment['JJ_MKVMAKER_DATA'] ?? testTempDir('jj_tor_real_').path;
+    final data = Platform.environment['JJ_MKVMAKER_DATA'] ?? testTempDir('jj_tor_real_', heldByApp: true).path;
     Directory(data).createSync(recursive: true);
     ComponentStore.dataDirectory = data;
     ComponentStore.shared = ComponentStore(data);