diff --git a/pkg/download/model.go b/pkg/download/model.go
index c838cf31..bf479a0b 100644
--- a/pkg/download/model.go
+++ b/pkg/download/model.go
@@ -32,6 +32,10 @@ type Task struct {
 	Progress  *Progress            `json:"progress"`
 	CreatedAt time.Time            `json:"createdAt"`
 	UpdatedAt time.Time            `json:"updatedAt"`
+	// DoneAt is the time when the task completed; nil if it has never
+	// finished. A done task never leaves the done state, so the value is
+	// written once and kept.
+	DoneAt *time.Time `json:"doneAt"`
 
 	producer         production.Source
 	producerReceived int64
@@ -134,6 +138,12 @@ func (t *Task) MarshalJSON() ([]byte, error) {
 func (t *Task) updateStatus(status base.Status) {
 	t.UpdatedAt = time.Now()
 	t.Status = status
+	// A done task never leaves the done state, so there is no branch to clear
+	// DoneAt on other transitions.
+	if status == base.DownloadStatusDone {
+		doneAt := time.Now()
+		t.DoneAt = &doneAt
+	}
 }
 
 func (t *Task) clone() *Task {
diff --git a/ui/flutter/lib/api/model/task.dart b/ui/flutter/lib/api/model/task.dart
index fd08e781..e72c6aa2 100644
--- a/ui/flutter/lib/api/model/task.dart
+++ b/ui/flutter/lib/api/model/task.dart
@@ -35,6 +35,7 @@ class Task {
   Progress progress;
   DateTime createdAt;
   DateTime updatedAt;
+  DateTime? doneAt;
 
   Task({
     required this.id,
@@ -45,6 +46,7 @@ class Task {
     required this.progress,
     required this.createdAt,
     required this.updatedAt,
+    this.doneAt,
   });
 
   factory Task.fromJson(Map<String, dynamic> json) => _$TaskFromJson(json);
diff --git a/ui/flutter/lib/api/model/task.g.dart b/ui/flutter/lib/api/model/task.g.dart
index f127beee..d394703f 100644
--- a/ui/flutter/lib/api/model/task.g.dart
+++ b/ui/flutter/lib/api/model/task.g.dart
@@ -15,6 +15,7 @@ Task _$TaskFromJson(Map<String, dynamic> json) => Task(
   progress: Progress.fromJson(json['progress'] as Map<String, dynamic>),
   createdAt: DateTime.parse(json['createdAt'] as String),
   updatedAt: DateTime.parse(json['updatedAt'] as String),
+  doneAt: json['doneAt'] == null ? null : DateTime.parse(json['doneAt'] as String),
 )..protocol = $enumDecodeNullable(_$ProtocolEnumMap, json['protocol']);
 
 Map<String, dynamic> _$TaskToJson(Task instance) => <String, dynamic>{
@@ -27,6 +28,7 @@ Map<String, dynamic> _$TaskToJson(Task instance) => <String, dynamic>{
   'progress': instance.progress.toJson(),
   'createdAt': instance.createdAt.toIso8601String(),
   'updatedAt': instance.updatedAt.toIso8601String(),
+  'doneAt': ?instance.doneAt?.toIso8601String(),
 };
 
 const _$StatusEnumMap = {
diff --git a/ui/flutter/lib/features/tasks/domain/task_record.dart b/ui/flutter/lib/features/tasks/domain/task_record.dart
index bd066ddb..85a10cb1 100644
--- a/ui/flutter/lib/features/tasks/domain/task_record.dart
+++ b/ui/flutter/lib/features/tasks/domain/task_record.dart
@@ -76,6 +76,7 @@ class TaskRecord {
     this.remaining,
     this.downloadDuration,
     this.createdAt,
+    this.doneAt,
     this.progress,
     this.error,
     this.completedLabel,
@@ -97,6 +98,7 @@ class TaskRecord {
   final String? remaining;
   final Duration? downloadDuration;
   final DateTime? createdAt;
+  final DateTime? doneAt;
   final double? progress;
   final String url;
   final String storagePath;
@@ -145,6 +147,7 @@ class TaskRecord {
       remainingSeconds: _remainingSeconds(task, totalBytes, downloadedBytes),
       downloadDuration: task.progress.used > 0 ? Duration(microseconds: (task.progress.used + 999) ~/ 1000) : null,
       createdAt: task.createdAt,
+      doneAt: task.doneAt,
       waiting: task.status == api_task.Status.wait,
       progress: progress,
       url: displayUrl,
diff --git a/ui/flutter/lib/features/tasks/presentation/widgets/task_drawer.dart b/ui/flutter/lib/features/tasks/presentation/widgets/task_drawer.dart
index 49de9689..c668ff9b 100644
--- a/ui/flutter/lib/features/tasks/presentation/widgets/task_drawer.dart
+++ b/ui/flutter/lib/features/tasks/presentation/widgets/task_drawer.dart
@@ -319,6 +319,14 @@ class _TaskInfoTab extends StatelessWidget {
           _InfoBlock(label: context.l10n.remaining, value: remaining),
         if (task.createdAt case final createdAt?)
           _InfoBlock(label: context.l10n.createdAt, value: _formatTaskDateTime(createdAt)),
+        if (task.status == TaskStatus.completed)
+          _InfoBlock(
+            label: context.l10n.doneAt,
+            value: switch (task.doneAt) {
+              final doneAt? => _formatTaskDateTime(doneAt),
+              _ => '—',
+            },
+          ),
         Container(
           key: const ValueKey('task-details-info-divider'),
           height: 1,
diff --git a/ui/flutter/lib/l10n/app_ar.arb b/ui/flutter/lib/l10n/app_ar.arb
index a450ab56..f25ea37b 100644
--- a/ui/flutter/lib/l10n/app_ar.arb
+++ b/ui/flutter/lib/l10n/app_ar.arb
@@ -246,6 +246,7 @@
   "refresh": "تحديث",
   "status": "الحالة",
   "createdAt": "وقت الإنشاء",
+  "doneAt": "وقت الإكتمال",
   "speed": "السرعة",
   "uploadSpeed": "سرعة التشغيل",
   "remaining": "البقايا",
diff --git a/ui/flutter/lib/l10n/app_az.arb b/ui/flutter/lib/l10n/app_az.arb
index d4f297d5..4a74c52f 100644
--- a/ui/flutter/lib/l10n/app_az.arb
+++ b/ui/flutter/lib/l10n/app_az.arb
@@ -260,6 +260,7 @@
   "refresh": "Yenilə",
   "status": "Vəziyyət",
   "createdAt": "Yaradılıb",
+  "doneAt": "Tamamlanıb",
   "speed": "Sürət",
   "uploadSpeed": "Yükləmə sürəti",
   "remaining": "Qalıb",
diff --git a/ui/flutter/lib/l10n/app_ca.arb b/ui/flutter/lib/l10n/app_ca.arb
index 86185834..a1ddc641 100644
--- a/ui/flutter/lib/l10n/app_ca.arb
+++ b/ui/flutter/lib/l10n/app_ca.arb
@@ -246,6 +246,7 @@
   "refresh": "Refresca",
   "status": "Estat",
   "createdAt": "Data de creació",
+  "doneAt": "Data de finalització",
   "speed": "Velocitat",
   "uploadSpeed": "Velocitat de pujada",
   "remaining": "Restant",
diff --git a/ui/flutter/lib/l10n/app_de.arb b/ui/flutter/lib/l10n/app_de.arb
index c0c97ad8..81f3fc7f 100644
--- a/ui/flutter/lib/l10n/app_de.arb
+++ b/ui/flutter/lib/l10n/app_de.arb
@@ -246,6 +246,7 @@
   "refresh": "Aktualisieren",
   "status": "-Status",
   "createdAt": "Erstellungszeit",
+  "doneAt": "Abgeschlossen am",
   "speed": "Geschwindigkeit",
   "uploadSpeed": "Upload-Geschwindigkeit",
   "remaining": "Verbleibend",
diff --git a/ui/flutter/lib/l10n/app_en.arb b/ui/flutter/lib/l10n/app_en.arb
index a241bbfd..883bed0c 100644
--- a/ui/flutter/lib/l10n/app_en.arb
+++ b/ui/flutter/lib/l10n/app_en.arb
@@ -268,6 +268,7 @@
   "refresh": "Refresh",
   "status": "Status",
   "createdAt": "Created",
+  "doneAt": "Completed at",
   "speed": "Speed",
   "uploadSpeed": "Upload speed",
   "remaining": "Remaining",
diff --git a/ui/flutter/lib/l10n/app_es.arb b/ui/flutter/lib/l10n/app_es.arb
index 3beff20c..002c8597 100644
--- a/ui/flutter/lib/l10n/app_es.arb
+++ b/ui/flutter/lib/l10n/app_es.arb
@@ -246,6 +246,7 @@
   "refresh": "Actualizar",
   "status": "Situación",
   "createdAt": "Fecha de creación",
+  "doneAt": "Fecha de finalización",
   "speed": "Velocidad",
   "uploadSpeed": "Velocidad de carga",
   "remaining": "Permaneciendo",
diff --git a/ui/flutter/lib/l10n/app_fa.arb b/ui/flutter/lib/l10n/app_fa.arb
index 08664277..59a17a59 100644
--- a/ui/flutter/lib/l10n/app_fa.arb
+++ b/ui/flutter/lib/l10n/app_fa.arb
@@ -246,6 +246,7 @@
   "refresh": "تازه‌سازی",
   "status": "وضعیت",
   "createdAt": "زمان ایجاد",
+  "doneAt": "زمان تکمیل",
   "speed": "سرعت",
   "uploadSpeed": "سرعت آپلود",
   "remaining": "باقی مانده",
diff --git a/ui/flutter/lib/l10n/app_fr.arb b/ui/flutter/lib/l10n/app_fr.arb
index 4c667ae7..66274439 100644
--- a/ui/flutter/lib/l10n/app_fr.arb
+++ b/ui/flutter/lib/l10n/app_fr.arb
@@ -246,6 +246,7 @@
   "refresh": "Rafraîchir",
   "status": "État",
   "createdAt": "Date de création",
+  "doneAt": "Terminé le",
   "speed": "Vitesse",
   "uploadSpeed": "Vitesse de chargement",
   "remaining": "Reste",
diff --git a/ui/flutter/lib/l10n/app_hu.arb b/ui/flutter/lib/l10n/app_hu.arb
index 7330fe85..d0fe3092 100644
--- a/ui/flutter/lib/l10n/app_hu.arb
+++ b/ui/flutter/lib/l10n/app_hu.arb
@@ -246,6 +246,7 @@
   "refresh": "Frissítés",
   "status": "állapot",
   "createdAt": "Létrehozás ideje",
+  "doneAt": "Befejezés ideje",
   "speed": "sebesség",
   "uploadSpeed": "Feltöltési sebesség",
   "remaining": "Maradt",
diff --git a/ui/flutter/lib/l10n/app_id.arb b/ui/flutter/lib/l10n/app_id.arb
index c28ee0a7..9ad8eddd 100644
--- a/ui/flutter/lib/l10n/app_id.arb
+++ b/ui/flutter/lib/l10n/app_id.arb
@@ -246,6 +246,7 @@
   "refresh": "Segarkan",
   "status": "Status",
   "createdAt": "Waktu dibuat",
+  "doneAt": "Waktu selesai",
   "speed": "Kecepatan",
   "uploadSpeed": "Kecepatan pemutakhiran",
   "remaining": "Sisa",
diff --git a/ui/flutter/lib/l10n/app_it.arb b/ui/flutter/lib/l10n/app_it.arb
index 0ae8fc65..0500ce26 100644
--- a/ui/flutter/lib/l10n/app_it.arb
+++ b/ui/flutter/lib/l10n/app_it.arb
@@ -246,6 +246,7 @@
   "refresh": "Aggiorna",
   "status": "Stato",
   "createdAt": "Data di creazione",
+  "doneAt": "Data di completamento",
   "speed": "Velocità",
   "uploadSpeed": "Velocità di carico",
   "remaining": "Rimanere",
diff --git a/ui/flutter/lib/l10n/app_ja.arb b/ui/flutter/lib/l10n/app_ja.arb
index d85cb2bc..2544161c 100644
--- a/ui/flutter/lib/l10n/app_ja.arb
+++ b/ui/flutter/lib/l10n/app_ja.arb
@@ -246,6 +246,7 @@
   "refresh": "リフレッシュ",
   "status": "ステータス",
   "createdAt": "作成日時",
+  "doneAt": "完了日時",
   "speed": "スピード",
   "uploadSpeed": "アップロード速度",
   "remaining": "メンテナンス",
diff --git a/ui/flutter/lib/l10n/app_ko.arb b/ui/flutter/lib/l10n/app_ko.arb
index 051a42f4..504b25b0 100644
--- a/ui/flutter/lib/l10n/app_ko.arb
+++ b/ui/flutter/lib/l10n/app_ko.arb
@@ -246,6 +246,7 @@
   "refresh": "의붓기",
   "status": "상태",
   "createdAt": "생성 시간",
+  "doneAt": "완료 시간",
   "speed": "속도",
   "uploadSpeed": "연결 속도",
   "remaining": "의논하기",
diff --git a/ui/flutter/lib/l10n/app_pl.arb b/ui/flutter/lib/l10n/app_pl.arb
index bf86c584..4d512aa4 100644
--- a/ui/flutter/lib/l10n/app_pl.arb
+++ b/ui/flutter/lib/l10n/app_pl.arb
@@ -246,6 +246,7 @@
   "refresh": "Odśwież",
   "status": "Stan",
   "createdAt": "Czas utworzenia",
+  "doneAt": "Czas ukończenia",
   "speed": "Prędkość",
   "uploadSpeed": "Prędkość wysyłania",
   "remaining": "Pozostały",
diff --git a/ui/flutter/lib/l10n/app_pt.arb b/ui/flutter/lib/l10n/app_pt.arb
index b7f581e4..f93da09e 100644
--- a/ui/flutter/lib/l10n/app_pt.arb
+++ b/ui/flutter/lib/l10n/app_pt.arb
@@ -246,6 +246,7 @@
   "refresh": "Actualizar",
   "status": "Estado",
   "createdAt": "Data de criação",
+  "doneAt": "Data de conclusão",
   "speed": "Velocidade",
   "uploadSpeed": "Velocidade de envio",
   "remaining": "Restante",
diff --git a/ui/flutter/lib/l10n/app_ru.arb b/ui/flutter/lib/l10n/app_ru.arb
index aea0b6f5..57035b2b 100644
--- a/ui/flutter/lib/l10n/app_ru.arb
+++ b/ui/flutter/lib/l10n/app_ru.arb
@@ -246,6 +246,7 @@
   "refresh": "освежиться",
   "status": "Статус",
   "createdAt": "Время создания",
+  "doneAt": "Время завершения",
   "speed": "Скорость",
   "uploadSpeed": "Скорость загрузки",
   "remaining": "оставаться",
diff --git a/ui/flutter/lib/l10n/app_ta.arb b/ui/flutter/lib/l10n/app_ta.arb
index a967ea8c..04193bd1 100644
--- a/ui/flutter/lib/l10n/app_ta.arb
+++ b/ui/flutter/lib/l10n/app_ta.arb
@@ -246,6 +246,7 @@
   "refresh": "புதுப்பி",
   "status": "நிலை",
   "createdAt": "உருவாக்கிய நேரம்",
+  "doneAt": "முடிந்த நேரம்",
   "speed": "வேகம்",
   "uploadSpeed": "வேகம்",
   "remaining": "மீதம்",
diff --git a/ui/flutter/lib/l10n/app_tr.arb b/ui/flutter/lib/l10n/app_tr.arb
index 89be13ea..7c01725b 100644
--- a/ui/flutter/lib/l10n/app_tr.arb
+++ b/ui/flutter/lib/l10n/app_tr.arb
@@ -246,6 +246,7 @@
   "refresh": "Yenile",
   "status": "Durum durumu",
   "createdAt": "Oluşturulma zamanı",
+  "doneAt": "Tamamlanma zamanı",
   "speed": "Hız",
   "uploadSpeed": "Yük hızı",
   "remaining": "Kalanlar",
diff --git a/ui/flutter/lib/l10n/app_uk.arb b/ui/flutter/lib/l10n/app_uk.arb
index d32d2701..65fc23a9 100644
--- a/ui/flutter/lib/l10n/app_uk.arb
+++ b/ui/flutter/lib/l10n/app_uk.arb
@@ -246,6 +246,7 @@
   "refresh": "Реверс",
   "status": "Контакты",
   "createdAt": "Час створення",
+  "doneAt": "Час завершення",
   "speed": "ОДЯГ",
   "uploadSpeed": "Швидкість завантаження",
   "remaining": "Ременування",
diff --git a/ui/flutter/lib/l10n/app_vi.arb b/ui/flutter/lib/l10n/app_vi.arb
index db3e0c37..8cbd8393 100644
--- a/ui/flutter/lib/l10n/app_vi.arb
+++ b/ui/flutter/lib/l10n/app_vi.arb
@@ -246,6 +246,7 @@
   "refresh": "Cập nhật",
   "status": "Trạng thái",
   "createdAt": "Thời gian tạo",
+  "doneAt": "Thời gian hoàn thành",
   "speed": "Tốc độ",
   "uploadSpeed": "Tốc độ",
   "remaining": "Ở lại",
diff --git a/ui/flutter/lib/l10n/app_zh.arb b/ui/flutter/lib/l10n/app_zh.arb
index 0269904d..fed70a8d 100644
--- a/ui/flutter/lib/l10n/app_zh.arb
+++ b/ui/flutter/lib/l10n/app_zh.arb
@@ -246,6 +246,7 @@
   "refresh": "刷新",
   "status": "状态",
   "createdAt": "创建时间",
+  "doneAt": "完成时间",
   "speed": "速度",
   "uploadSpeed": "上传速度",
   "remaining": "剩余时间",
diff --git a/ui/flutter/lib/l10n/app_zh_TW.arb b/ui/flutter/lib/l10n/app_zh_TW.arb
index 5ad3f7f7..9d8a4b94 100644
--- a/ui/flutter/lib/l10n/app_zh_TW.arb
+++ b/ui/flutter/lib/l10n/app_zh_TW.arb
@@ -246,6 +246,7 @@
   "refresh": "重新整理",
   "status": "狀態",
   "createdAt": "建立時間",
+  "doneAt": "完成時間",
   "speed": "速度",
   "uploadSpeed": "上傳速度",
   "remaining": "剩餘時間",
diff --git a/ui/flutter/macos/Podfile.lock b/ui/flutter/macos/Podfile.lock
index 25728b41..ab2d2f29 100644
--- a/ui/flutter/macos/Podfile.lock
+++ b/ui/flutter/macos/Podfile.lock
@@ -7,7 +7,8 @@ PODS:
     - FlutterMacOS
   - device_info_plus (0.0.1):
     - FlutterMacOS
-  - file_picker (0.0.1):
+  - file_picker_darwin (1.0.0):
+    - Flutter
     - FlutterMacOS
   - flutter_inappwebview_macos (0.0.1):
     - FlutterMacOS
@@ -41,7 +42,7 @@ DEPENDENCIES:
   - desktop_drop (from `Flutter/ephemeral/.symlinks/plugins/desktop_drop/macos`)
   - desktop_multi_window (from `Flutter/ephemeral/.symlinks/plugins/desktop_multi_window/macos`)
   - device_info_plus (from `Flutter/ephemeral/.symlinks/plugins/device_info_plus/macos`)
-  - file_picker (from `Flutter/ephemeral/.symlinks/plugins/file_picker/macos`)
+  - file_picker_darwin (from `Flutter/ephemeral/.symlinks/plugins/file_picker_darwin/darwin`)
   - flutter_inappwebview_macos (from `Flutter/ephemeral/.symlinks/plugins/flutter_inappwebview_macos/macos`)
   - flutter_local_notifications (from `Flutter/ephemeral/.symlinks/plugins/flutter_local_notifications/macos`)
   - FlutterMacOS (from `Flutter/ephemeral`)
@@ -68,8 +69,8 @@ EXTERNAL SOURCES:
     :path: Flutter/ephemeral/.symlinks/plugins/desktop_multi_window/macos
   device_info_plus:
     :path: Flutter/ephemeral/.symlinks/plugins/device_info_plus/macos
-  file_picker:
-    :path: Flutter/ephemeral/.symlinks/plugins/file_picker/macos
+  file_picker_darwin:
+    :path: Flutter/ephemeral/.symlinks/plugins/file_picker_darwin/darwin
   flutter_inappwebview_macos:
     :path: Flutter/ephemeral/.symlinks/plugins/flutter_inappwebview_macos/macos
   flutter_local_notifications:
@@ -96,25 +97,25 @@ EXTERNAL SOURCES:
     :path: Flutter/ephemeral/.symlinks/plugins/window_manager/macos
 
 SPEC CHECKSUMS:
-  app_links: 05a6ec2341985eb05e9f97dc63f5837c39895c3f
-  desktop_drop: e0b672a7d84c0a6cbc378595e82cdb15f2970a43
-  desktop_multi_window: 93667594ccc4b88d91a97972fd3b1b89667fa80a
-  device_info_plus: 4fb280989f669696856f8b129e4a5e3cd6c48f76
-  file_picker: 7584aae6fa07a041af2b36a2655122d42f578c1a
-  flutter_inappwebview_macos: c2d68649f9f8f1831bfcd98d73fd6256366d9d1d
-  flutter_local_notifications: 4bf37a31afde695b56091b4ae3e4d9c7a7e6cda0
+  app_links: c3185399a5cabc2e610ee5ad52fb7269b84ff869
+  desktop_drop: 69eeff437544aa619c8db7f4481b3a65f7696898
+  desktop_multi_window: 566489c048b501134f9d7fb6a2354c60a9126486
+  device_info_plus: 1b14eed9bf95428983aed283a8d51cce3d8c4215
+  file_picker_darwin: 27e043831d68462d54f1c40e724b1f53c9d1e8be
+  flutter_inappwebview_macos: bdf207b8f4ebd58e86ae06cd96b147de99a67c9b
+  flutter_local_notifications: 14e285ca39907db50704f7f46c9ab7a526bd7ead
   FlutterMacOS: d0db08ddef1a9af05a5ec4b724367152bb0500b1
-  open_dir_macos: 79810d7921d777f8732bf6358b3a0839a8fad9b5
+  open_dir_macos: 9649018f88e71eb9fb8aa3d95caec30a73c08c5b
   OrderedSet: e539b66b644ff081c73a262d24ad552a69be3a94
-  package_info_plus: f0052d280d17aa382b932f399edf32507174e870
-  screen_retriever_macos: c5508cc3c66ff0d4db650480cf0ab691e220d933
-  share_plus: 510bf0af1a42cd602274b4629920c9649c52f4cc
-  shared_preferences_foundation: 7036424c3d8ec98dfe75ff1667cb0cd531ec82bb
-  tray_manager: a104b5c81b578d83f3c3d0f40a997c8b10810166
-  uri_content: 5f98ff12ded3f2e1681b689828d747bafb03ba5f
-  url_launcher_macos: f87a979182d112f911de6820aefddaf56ee9fbfd
-  window_manager: b729e31d38fb04905235df9ea896128991cad99e
+  package_info_plus: 12f1c5c2cfe8727ca46cbd0b26677728972d9a5b
+  screen_retriever_macos: 038d3f7b34a779b06f536842003e41e8ec1fb4b7
+  share_plus: 1fa619de8392a4398bfaf176d441853922614e89
+  shared_preferences_foundation: 5086985c1d43c5ba4d5e69a4e8083a389e2909e6
+  tray_manager: c2a678ee19e2a094f0c2d03660ee2c3e81cea8ab
+  uri_content: e002074bcf6fbf905a3909603f9a2b1b490fce67
+  url_launcher_macos: 175a54c831f4375a6cf895875f716ee5af3888ce
+  window_manager: e25faf20d88283a0d46e7b1a759d07261ca27575
 
 PODFILE CHECKSUM: 54d867c82ac51cbd61b565781b9fada492027009
 
-COCOAPODS: 1.17.0
+COCOAPODS: 1.15.2
diff --git a/ui/flutter/test/features/tasks/domain/task_record_test.dart b/ui/flutter/test/features/tasks/domain/task_record_test.dart
index 17a8e4be..eba26e4f 100644
--- a/ui/flutter/test/features/tasks/domain/task_record_test.dart
+++ b/ui/flutter/test/features/tasks/domain/task_record_test.dart
@@ -4,7 +4,7 @@ import 'package:gopeed/core/icons/gopeed_icons.dart';
 import 'package:gopeed/features/tasks/domain/task_record.dart';
 
 void main() {
-  api.Task buildTask(List<int> selection, int size) => api.Task.fromJson({
+  api.Task buildTask(List<int> selection, int size, {String? doneAt}) => api.Task.fromJson({
     'id': 'bt-selection',
     'name': 'bundle',
     'protocol': 'bt',
@@ -12,6 +12,7 @@ void main() {
     'uploading': false,
     'createdAt': '2026-01-01T00:00:00Z',
     'updatedAt': '2026-01-01T00:00:00Z',
+    'doneAt': doneAt,
     'meta': {
       'req': {'url': 'magnet:?xt=urn:btih:test'},
       'opts': {'path': '/downloads', 'selectFiles': selection},
@@ -43,6 +44,13 @@ void main() {
     expect(record.totalBytes, 60);
   });
 
+  test('completion time maps from api and stays null for legacy tasks', () {
+    final completed = TaskRecord.fromApi(buildTask([], 60, doneAt: '2026-01-02T03:04:05Z'));
+    expect(completed.doneAt, DateTime.parse('2026-01-02T03:04:05Z'));
+    final legacy = TaskRecord.fromApi(buildTask([], 60));
+    expect(legacy.doneAt, isNull);
+  });
+
   test('file names preserve hash and question mark characters for type detection', () {
     expect(
       taskFileTypeIcon('Slow English Podcast #2 _ Eating, Talking, and Learning Natural English.mp4'),
diff --git a/ui/flutter/test/widget_test.dart b/ui/flutter/test/widget_test.dart
index 7269398e..c9427a11 100644
--- a/ui/flutter/test/widget_test.dart
+++ b/ui/flutter/test/widget_test.dart
@@ -2649,7 +2649,7 @@ void main() {
     await tester.tap(find.byKey(const ValueKey('settings-language-select')));
     await tester.pumpAndSettle();
     expect(find.text('English'), findsOneWidget);
-    expect(SettingsLanguageSelect.supportedValues, hasLength(21));
+    expect(SettingsLanguageSelect.supportedValues, hasLength(22));
     expect(SettingsLanguageSelect.supportedValues, containsAll(<String>['zh', 'zh_TW', 'pt']));
     expect(SettingsLanguageSelect.supportedValues, isNot(contains('zh_CN')));
     expect(SettingsLanguageSelect.supportedValues, isNot(contains('pt_BR')));
@@ -4127,6 +4127,7 @@ void main() {
       remaining: '1 minute remaining',
       downloadDuration: const Duration(hours: 1, minutes: 2, seconds: 3),
       createdAt: DateTime(2026, 8, 27, 12, 34, 56),
+      doneAt: DateTime(2026, 8, 28, 1, 2, 3),
     );
 
     await tester.pumpWidget(
@@ -4197,7 +4198,14 @@ void main() {
     expect(find.text('50 B / 100 B'), findsNothing);
     expect(find.text('Created'), findsOneWidget);
     expect(find.text('2026-08-27 12:34:56'), findsOneWidget);
+    expect(find.text('Completed at'), findsOneWidget);
+    expect(find.text('2026-08-28 01:02:03'), findsOneWidget);
+    expect(
+      tester.getBottomLeft(find.text('2026-08-27 12:34:56')).dy,
+      lessThan(tester.getTopLeft(find.text('Completed at')).dy),
+    );
     final infoDivider = find.byKey(const ValueKey('task-details-info-divider'));
+    expect(tester.getBottomLeft(find.text('Completed at')).dy, lessThan(tester.getTopLeft(infoDivider).dy));
     expect(tester.getBottomLeft(find.text('Created')).dy, lessThan(tester.getTopLeft(infoDivider).dy));
     expect(tester.getBottomLeft(infoDivider).dy, lessThan(tester.getTopLeft(find.text('Download Link')).dy));
     expect(find.text('1 minute remaining'), findsNothing);
@@ -4259,6 +4267,30 @@ void main() {
     expect(find.text('—'), findsOneWidget);
   });
 
+  testWidgets('completed task details show a dash when no done time is recorded', (WidgetTester tester) async {
+    await _setTestSize(tester, const Size(900, 700));
+    final task = _taskRecord(
+      id: 'done-details',
+      name: 'done.zip',
+      status: TaskStatus.completed,
+      downloadDuration: const Duration(hours: 1, minutes: 2, seconds: 3),
+    );
+
+    await tester.pumpWidget(
+      ProviderScope(
+        child: shad.ShadcnApp(
+          theme: AppTheme.light(),
+          materialTheme: AppTheme.materialLight(),
+          home: TaskDetailsView(task: task, mobile: false, onOpenStorage: () {}, onUpdateUrl: (_) async {}),
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+
+    expect(find.text('Completed at'), findsOneWidget);
+    expect(find.text('—'), findsOneWidget);
+  });
+
   testWidgets('failed task details omit the unavailable error reason', (WidgetTester tester) async {
     await _setTestSize(tester, const Size(900, 700));
     final task = TaskRecord(
@@ -6164,6 +6196,7 @@ TaskRecord _taskRecord({
   String? remaining,
   Duration? downloadDuration,
   DateTime? createdAt,
+  DateTime? doneAt,
   bool isFolder = false,
   Map<String, String> requestHeaders = const {},
 }) {
@@ -6184,6 +6217,7 @@ TaskRecord _taskRecord({
     remaining: remaining,
     downloadDuration: downloadDuration,
     createdAt: createdAt,
+    doneAt: doneAt,
     requestHeaders: requestHeaders,
   );
 }