diff --git a/packages/i18n/src/locales/cs/translations.json b/packages/i18n/src/locales/cs/translations.json
index 78a396051e..263a49872a 100644
--- a/packages/i18n/src/locales/cs/translations.json
+++ b/packages/i18n/src/locales/cs/translations.json
@@ -1081,7 +1081,9 @@
     "select": {
       "error": "Vyberte alespoň jednu pracovní položku",
       "empty": "Nevybrány žádné pracovní položky",
-      "add_selected": "Přidat vybrané pracovní položky"
+      "add_selected": "Přidat vybrané pracovní položky",
+      "select_all": "Vybrat vše",
+      "deselect_all": "Zrušit výběr všeho"
     },
     "open_in_full_screen": "Otevřít pracovní položku na celou obrazovku"
   },
diff --git a/packages/i18n/src/locales/de/translations.json b/packages/i18n/src/locales/de/translations.json
index 1e9ba1e3d5..f9444e0b88 100644
--- a/packages/i18n/src/locales/de/translations.json
+++ b/packages/i18n/src/locales/de/translations.json
@@ -1081,7 +1081,9 @@
     "select": {
       "error": "Wählen Sie mindestens ein Arbeitselement aus",
       "empty": "Keine Arbeitselemente ausgewählt",
-      "add_selected": "Ausgewählte Arbeitselemente hinzufügen"
+      "add_selected": "Ausgewählte Arbeitselemente hinzufügen",
+      "select_all": "Alle auswählen",
+      "deselect_all": "Alle abwählen"
     },
     "open_in_full_screen": "Arbeitselement im Vollbild öffnen"
   },
diff --git a/packages/i18n/src/locales/en/translations.json b/packages/i18n/src/locales/en/translations.json
index 196e1ce4ca..56187403fd 100644
--- a/packages/i18n/src/locales/en/translations.json
+++ b/packages/i18n/src/locales/en/translations.json
@@ -924,7 +924,9 @@
     "select": {
       "error": "Please select at least one work item",
       "empty": "No work items selected",
-      "add_selected": "Add selected work items"
+      "add_selected": "Add selected work items",
+      "select_all": "Select all",
+      "deselect_all": "Deselect all"
     },
     "open_in_full_screen": "Open work item in full screen"
   },
diff --git a/packages/i18n/src/locales/es/translations.json b/packages/i18n/src/locales/es/translations.json
index 8fbeb87ad5..f736bcee47 100644
--- a/packages/i18n/src/locales/es/translations.json
+++ b/packages/i18n/src/locales/es/translations.json
@@ -1084,7 +1084,9 @@
     "select": {
       "error": "Por favor selecciona al menos un elemento de trabajo",
       "empty": "No hay elementos de trabajo seleccionados",
-      "add_selected": "Agregar elementos seleccionados"
+      "add_selected": "Agregar elementos seleccionados",
+      "select_all": "Seleccionar todo",
+      "deselect_all": "Deseleccionar todo"
     },
     "open_in_full_screen": "Abrir elemento de trabajo en pantalla completa"
   },
diff --git a/packages/i18n/src/locales/fr/translations.json b/packages/i18n/src/locales/fr/translations.json
index 16f4a74e48..749acf9bd4 100644
--- a/packages/i18n/src/locales/fr/translations.json
+++ b/packages/i18n/src/locales/fr/translations.json
@@ -1082,7 +1082,9 @@
     "select": {
       "error": "Veuillez sélectionner au moins un élément de travail",
       "empty": "Aucun élément de travail sélectionné",
-      "add_selected": "Ajouter les éléments de travail sélectionnés"
+      "add_selected": "Ajouter les éléments de travail sélectionnés",
+      "select_all": "Sélectionner tout",
+      "deselect_all": "Tout désélectionner"
     },
     "open_in_full_screen": "Ouvrir l'élément de travail en plein écran"
   },
diff --git a/packages/i18n/src/locales/id/translations.json b/packages/i18n/src/locales/id/translations.json
index 577086dad1..e3974bc90f 100644
--- a/packages/i18n/src/locales/id/translations.json
+++ b/packages/i18n/src/locales/id/translations.json
@@ -1081,7 +1081,9 @@
     "select": {
       "error": "Silakan pilih setidaknya satu item kerja",
       "empty": "Tidak ada item kerja yang dipilih",
-      "add_selected": "Tambah item kerja yang dipilih"
+      "add_selected": "Tambah item kerja yang dipilih",
+      "select_all": "Pilih semua item kerja",
+      "deselect_all": "Batalkan pilihan semua item kerja"
     },
     "open_in_full_screen": "Buka item kerja dalam layar penuh"
   },
diff --git a/packages/i18n/src/locales/it/translations.json b/packages/i18n/src/locales/it/translations.json
index 20abc2d165..555fe09be5 100644
--- a/packages/i18n/src/locales/it/translations.json
+++ b/packages/i18n/src/locales/it/translations.json
@@ -1080,7 +1080,9 @@
     "select": {
       "error": "Seleziona almeno un elemento di lavoro",
       "empty": "Nessun elemento di lavoro selezionato",
-      "add_selected": "Aggiungi gli elementi di lavoro selezionati"
+      "add_selected": "Aggiungi gli elementi di lavoro selezionati",
+      "select_all": "Seleziona tutto",
+      "deselect_all": "Deseleziona tutto"
     },
     "open_in_full_screen": "Apri l'elemento di lavoro a schermo intero"
   },
diff --git a/packages/i18n/src/locales/ja/translations.json b/packages/i18n/src/locales/ja/translations.json
index cd27d8bde7..54fb33e569 100644
--- a/packages/i18n/src/locales/ja/translations.json
+++ b/packages/i18n/src/locales/ja/translations.json
@@ -1082,7 +1082,9 @@
     "select": {
       "error": "少なくとも1つの作業項目を選択してください",
       "empty": "作業項目が選択されていません",
-      "add_selected": "選択した作業項目を追加"
+      "add_selected": "選択した作業項目を追加",
+      "select_all": "すべて選択",
+      "deselect_all": "すべての選択を解除"
     },
     "open_in_full_screen": "作業項目をフルスクリーンで開く"
   },
diff --git a/packages/i18n/src/locales/ko/translations.json b/packages/i18n/src/locales/ko/translations.json
index c7610b003a..817487ada8 100644
--- a/packages/i18n/src/locales/ko/translations.json
+++ b/packages/i18n/src/locales/ko/translations.json
@@ -1083,7 +1083,9 @@
     "select": {
       "error": "최소 하나의 작업 항목을 선택하세요",
       "empty": "선택된 작업 항목 없음",
-      "add_selected": "선택된 작업 항목 추가"
+      "add_selected": "선택된 작업 항목 추가",
+      "select_all": "모두 선택",
+      "deselect_all": "모두 선택 해제"
     },
     "open_in_full_screen": "작업 항목을 전체 화면으로 열기"
   },
diff --git a/packages/i18n/src/locales/pl/translations.json b/packages/i18n/src/locales/pl/translations.json
index 06d9182de6..631921d039 100644
--- a/packages/i18n/src/locales/pl/translations.json
+++ b/packages/i18n/src/locales/pl/translations.json
@@ -1083,7 +1083,9 @@
     "select": {
       "error": "Wybierz co najmniej jeden element pracy",
       "empty": "Nie wybrano żadnych elementów pracy",
-      "add_selected": "Dodaj wybrane elementy pracy"
+      "add_selected": "Dodaj wybrane elementy pracy",
+      "select_all": "Wybierz wszystko",
+      "deselect_all": "Odznacz wszystko"
     },
     "open_in_full_screen": "Otwórz element pracy na pełnym ekranie"
   },
diff --git a/packages/i18n/src/locales/pt-BR/translations.json b/packages/i18n/src/locales/pt-BR/translations.json
index da2bcc7bbf..e7ab885e94 100644
--- a/packages/i18n/src/locales/pt-BR/translations.json
+++ b/packages/i18n/src/locales/pt-BR/translations.json
@@ -1083,7 +1083,9 @@
     "select": {
       "error": "Selecione pelo menos um item de trabalho",
       "empty": "Nenhum item de trabalho selecionado",
-      "add_selected": "Adicionar itens de trabalho selecionados"
+      "add_selected": "Adicionar itens de trabalho selecionados",
+      "select_all": "Selecionar tudo",
+      "deselect_all": "Desmarcar tudo"
     },
     "open_in_full_screen": "Abrir item de trabalho em tela cheia"
   },
diff --git a/packages/i18n/src/locales/ro/translations.json b/packages/i18n/src/locales/ro/translations.json
index 04ae61e6b2..d0a35b48c8 100644
--- a/packages/i18n/src/locales/ro/translations.json
+++ b/packages/i18n/src/locales/ro/translations.json
@@ -1081,7 +1081,9 @@
     "select": {
       "error": "Selectează cel puțin o activitate",
       "empty": "Nicio activitate selectată",
-      "add_selected": "Adaugă activitățile selectate"
+      "add_selected": "Adaugă activitățile selectate",
+      "select_all": "Selectează tot",
+      "deselect_all": "Deselează tot"
     },
     "open_in_full_screen": "Deschide activitatea pe tot ecranul"
   },
diff --git a/packages/i18n/src/locales/ru/translations.json b/packages/i18n/src/locales/ru/translations.json
index e667818683..fc45cb708b 100644
--- a/packages/i18n/src/locales/ru/translations.json
+++ b/packages/i18n/src/locales/ru/translations.json
@@ -1083,7 +1083,9 @@
     "select": {
       "error": "Выберите хотя бы один рабочий элемент",
       "empty": "Рабочие элементы не выбраны",
-      "add_selected": "Добавить выбранные рабочие элементы"
+      "add_selected": "Добавить выбранные рабочие элементы",
+      "select_all": "Выбрать все",
+      "deselect_all": "Снять выделение со всех"
     },
     "open_in_full_screen": "Открыть рабочий элемент в полном экране"
   },
diff --git a/packages/i18n/src/locales/sk/translations.json b/packages/i18n/src/locales/sk/translations.json
index 019bbba869..254d33b01a 100644
--- a/packages/i18n/src/locales/sk/translations.json
+++ b/packages/i18n/src/locales/sk/translations.json
@@ -1083,7 +1083,9 @@
     "select": {
       "error": "Vyberte aspoň jednu pracovnú položku",
       "empty": "Nie sú vybrané žiadne pracovné položky",
-      "add_selected": "Pridať vybrané pracovné položky"
+      "add_selected": "Pridať vybrané pracovné položky",
+      "select_all": "Vybrať všetko",
+      "deselect_all": "Zrušiť výber všetkého"
     },
     "open_in_full_screen": "Otvoriť pracovnú položku na celú obrazovku"
   },
diff --git a/packages/i18n/src/locales/tr-TR/translations.json b/packages/i18n/src/locales/tr-TR/translations.json
index 1be2b8b741..5456a40942 100644
--- a/packages/i18n/src/locales/tr-TR/translations.json
+++ b/packages/i18n/src/locales/tr-TR/translations.json
@@ -1084,7 +1084,9 @@
     "select": {
       "error": "Lütfen en az bir iş öğesi seçin",
       "empty": "Hiç iş öğesi seçilmedi",
-      "add_selected": "Seçilen iş öğelerini ekle"
+      "add_selected": "Seçilen iş öğelerini ekle",
+      "select_all": "Tümünü seç",
+      "deselect_all": "Tümünü seçme"
     },
     "open_in_full_screen": "İş öğesini tam ekranda aç"
   },
diff --git a/packages/i18n/src/locales/ua/translations.json b/packages/i18n/src/locales/ua/translations.json
index 0dd0161cd4..959dc86f9f 100644
--- a/packages/i18n/src/locales/ua/translations.json
+++ b/packages/i18n/src/locales/ua/translations.json
@@ -1083,7 +1083,9 @@
     "select": {
       "error": "Виберіть принаймні одну робочу одиницю",
       "empty": "Не вибрано жодної робочої одиниці",
-      "add_selected": "Додати вибрані робочі одиниці"
+      "add_selected": "Додати вибрані робочі одиниці",
+      "select_all": "Вибрати всі",
+      "deselect_all": "Скасувати вибір усіх"
     },
     "open_in_full_screen": "Відкрити робочу одиницю на повний екран"
   },
diff --git a/packages/i18n/src/locales/vi-VN/translations.json b/packages/i18n/src/locales/vi-VN/translations.json
index 3f9158b9d6..b95bc14625 100644
--- a/packages/i18n/src/locales/vi-VN/translations.json
+++ b/packages/i18n/src/locales/vi-VN/translations.json
@@ -1082,7 +1082,9 @@
     "select": {
       "error": "Vui lòng chọn ít nhất một mục công việc",
       "empty": "Chưa chọn mục công việc",
-      "add_selected": "Thêm mục công việc đã chọn"
+      "add_selected": "Thêm mục công việc đã chọn",
+      "select_all": "Chọn tất cả",
+      "deselect_all": "Bỏ chọn tất cả"
     },
     "open_in_full_screen": "Mở mục công việc trong chế độ toàn màn hình"
   },
diff --git a/packages/i18n/src/locales/zh-CN/translations.json b/packages/i18n/src/locales/zh-CN/translations.json
index d2fa34d6ef..b398deb5d3 100644
--- a/packages/i18n/src/locales/zh-CN/translations.json
+++ b/packages/i18n/src/locales/zh-CN/translations.json
@@ -1082,7 +1082,9 @@
     "select": {
       "error": "请至少选择一个工作项",
       "empty": "未选择工作项",
-      "add_selected": "添加所选工作项"
+      "add_selected": "添加所选工作项",
+      "select_all": "全选",
+      "deselect_all": "取消全选"
     },
     "open_in_full_screen": "在全屏中打开工作项"
   },
diff --git a/packages/i18n/src/locales/zh-TW/translations.json b/packages/i18n/src/locales/zh-TW/translations.json
index 6741ac4b42..0481248e7b 100644
--- a/packages/i18n/src/locales/zh-TW/translations.json
+++ b/packages/i18n/src/locales/zh-TW/translations.json
@@ -1083,7 +1083,9 @@
     "select": {
       "error": "請至少選擇一個工作事項",
       "empty": "未選擇工作事項",
-      "add_selected": "新增已選取的工作事項"
+      "add_selected": "新增已選取的工作事項",
+      "select_all": "全選",
+      "deselect_all": "取消全選"
     },
     "open_in_full_screen": "以全螢幕開啟工作事項"
   },
diff --git a/web/core/components/core/modals/existing-issues-list-modal.tsx b/web/core/components/core/modals/existing-issues-list-modal.tsx
index f0af7ef47c..f9132133bd 100644
--- a/web/core/components/core/modals/existing-issues-list-modal.tsx
+++ b/web/core/components/core/modals/existing-issues-list-modal.tsx
@@ -110,6 +110,10 @@ export const ExistingIssuesListModal: React.FC<Props> = (props) => {
       });
   };
 
+  const handleSelectIssues = () => {
+    setSelectedIssues((prevData) => (prevData.length === filteredIssues.length ? [] : [...filteredIssues]));
+  };
+
   useEffect(() => {
     if (selectedWorkItems) {
       setSelectedIssues(selectedWorkItems);
@@ -317,15 +321,31 @@ export const ExistingIssuesListModal: React.FC<Props> = (props) => {
                     )}
                   </Combobox.Options>
                 </Combobox>
-                <div className="flex items-center justify-end gap-2 p-3">
-                  <Button variant="neutral-primary" size="sm" onClick={handleClose}>
-                    {t("common.cancel")}
+                <div className="flex justify-between items-center">
+                  <Button
+                    variant="link-primary"
+                    size="sm"
+                    onClick={handleSelectIssues}
+                    disabled={filteredIssues.length === 0}
+                  >
+                    {selectedIssues.length === issues.length
+                      ? t("issue.select.deselect_all")
+                      : t("issue.select.select_all")}
                   </Button>
-                  {selectedIssues.length > 0 && (
-                    <Button variant="primary" size="sm" onClick={onSubmit} loading={isSubmitting}>
+                  <div className="flex items-center justify-end gap-2 p-3">
+                    <Button variant="neutral-primary" size="sm" onClick={handleClose}>
+                      {t("common.cancel")}
+                    </Button>
+                    <Button
+                      variant="primary"
+                      size="sm"
+                      onClick={onSubmit}
+                      loading={isSubmitting}
+                      disabled={isSubmitting || selectedIssues.length === 0}
+                    >
                       {isSubmitting ? t("common.adding") : t("issue.select.add_selected")}
                     </Button>
-                  )}
+                  </div>
                 </div>
               </Dialog.Panel>
             </Transition.Child>