diff --git a/frontend/modules/project-management/components/TaskModal.vue b/frontend/modules/project-management/components/TaskModal.vue
index 7f11066..bb90876 100644
--- a/frontend/modules/project-management/components/TaskModal.vue
+++ b/frontend/modules/project-management/components/TaskModal.vue
@@ -569,7 +569,7 @@ const props = defineProps<{
 
 const emit = defineEmits<{
     (e: 'update:modelValue', value: boolean): void
-    (e: 'saved'): void
+    (e: 'saved', task?: Task): void
 }>()
 
 const isOpen = computed({
@@ -1042,7 +1042,7 @@ async function handleSubmit() {
             await removeRecurrence(props.task.recurrence.id)
         }
 
-        emit('saved')
+        emit('saved', savedTask)
         isOpen.value = false
     } finally {
         isSubmitting.value = false
diff --git a/frontend/modules/project-management/pages/my-tasks.vue b/frontend/modules/project-management/pages/my-tasks.vue
index 35bb536..7b015da 100644
--- a/frontend/modules/project-management/pages/my-tasks.vue
+++ b/frontend/modules/project-management/pages/my-tasks.vue
@@ -269,7 +269,13 @@ watch(taskModalOpen, (open) => {
     }
 })
 
-async function onSaved() {
+async function onSaved(savedTask?: Task) {
+    // Mise à jour optimiste avant le re-fetch (cf. index.vue) pour éviter le snapshot stale.
+    if (savedTask) {
+        const idx = tasks.value.findIndex(t => t.id === savedTask.id)
+        if (idx !== -1) tasks.value[idx] = savedTask
+        if (selectedTask.value?.id === savedTask.id) selectedTask.value = savedTask
+    }
     await loadTasks()
 }
 
diff --git a/frontend/modules/project-management/pages/projects/[id]/archives.vue b/frontend/modules/project-management/pages/projects/[id]/archives.vue
index b17dd26..de3ea86 100644
--- a/frontend/modules/project-management/pages/projects/[id]/archives.vue
+++ b/frontend/modules/project-management/pages/projects/[id]/archives.vue
@@ -150,7 +150,13 @@ function openTaskEdit(task: Task) {
     taskDrawerOpen.value = true
 }
 
-async function onSaved() {
+async function onSaved(savedTask?: Task) {
+    // Mise à jour optimiste avant le re-fetch (cf. index.vue) pour éviter le snapshot stale.
+    if (savedTask) {
+        const idx = archivedTasks.value.findIndex(t => t.id === savedTask.id)
+        if (idx !== -1) archivedTasks.value[idx] = savedTask
+        if (selectedTask.value?.id === savedTask.id) selectedTask.value = savedTask
+    }
     await loadData()
 }
 
diff --git a/frontend/modules/project-management/pages/projects/[id]/index.vue b/frontend/modules/project-management/pages/projects/[id]/index.vue
index b8165f0..13bd443 100644
--- a/frontend/modules/project-management/pages/projects/[id]/index.vue
+++ b/frontend/modules/project-management/pages/projects/[id]/index.vue
@@ -473,7 +473,16 @@ async function onBulkDelete() {
     await loadData()
 }
 
-async function onSaved() {
+async function onSaved(savedTask?: Task) {
+    // Mise à jour optimiste : la modale se ferme avant la fin du re-fetch, on
+    // réinjecte immédiatement la tâche fraîche renvoyée par l'API pour éviter
+    // que la liste (et un éventuel ré-ouverture de la modale) reste sur l'ancien snapshot.
+    if (savedTask) {
+        const idx = tasks.value.findIndex(t => t.id === savedTask.id)
+        if (idx !== -1) tasks.value[idx] = savedTask
+        else tasks.value.push(savedTask)
+        if (selectedTask.value?.id === savedTask.id) selectedTask.value = savedTask
+    }
     await loadData()
 }