diff --git a/src/clients/daily-client.ts b/src/clients/daily-client.ts
index 3dd015b..a27b08c 100644
--- a/src/clients/daily-client.ts
+++ b/src/clients/daily-client.ts
@@ -109,7 +109,8 @@ export class DailyClient {
       ...checkbox,
       date: parseDate(checkbox.date),
       createdAt: parseDate(checkbox.createdAt),
-      updatedAt: parseDate(checkbox.updatedAt)
+      updatedAt: parseDate(checkbox.updatedAt),
+      isArchived: checkbox.text.includes('[ARCHIVÉ]')
     };
   }
 
diff --git a/src/components/daily/DailyCheckboxItem.tsx b/src/components/daily/DailyCheckboxItem.tsx
index 884959b..cb34c04 100644
--- a/src/components/daily/DailyCheckboxItem.tsx
+++ b/src/components/daily/DailyCheckboxItem.tsx
@@ -102,20 +102,27 @@ export function DailyCheckboxItem({
     setEditingCheckbox(null);
   };
 
+  // Vérifier si la tâche est archivée
+  const isArchived = checkbox.isArchived;
+
   return (
     <>
       <div className={`flex items-center gap-3 px-3 py-2 sm:py-1.5 sm:gap-2 rounded border transition-colors group ${
         checkbox.type === 'meeting' 
           ? 'border-l-4 border-l-blue-500 border-t-[var(--border)]/30 border-r-[var(--border)]/30 border-b-[var(--border)]/30 hover:border-t-[var(--border)] hover:border-r-[var(--border)] hover:border-b-[var(--border)]'
           : 'border-l-4 border-l-green-500 border-t-[var(--border)]/30 border-r-[var(--border)]/30 border-b-[var(--border)]/30 hover:border-t-[var(--border)] hover:border-r-[var(--border)] hover:border-b-[var(--border)]'
-      }`}>
+      } ${isArchived ? 'opacity-60 bg-[var(--muted)]/20' : ''}`}>
         {/* Checkbox */}
         <input
           type="checkbox"
-          checked={isChecked}
+          checked={isArchived ? false : isChecked}
           onChange={handleOptimisticToggle}
-          disabled={saving}
-          className="w-4 h-4 md:w-3.5 md:h-3.5 rounded border border-[var(--border)] text-[var(--primary)] focus:ring-[var(--primary)]/20 focus:ring-1"
+          disabled={saving || isArchived}
+          className={`w-4 h-4 md:w-3.5 md:h-3.5 rounded border text-[var(--primary)] focus:ring-[var(--primary)]/20 focus:ring-1 ${
+            isArchived 
+              ? 'border-[var(--muted)] cursor-not-allowed opacity-50' 
+              : 'border-[var(--border)]'
+          }`}
         />
         
         {/* Contenu principal */}
@@ -133,7 +140,7 @@ export function DailyCheckboxItem({
             {/* Texte cliquable pour édition inline */}
             <span 
               className={`flex-1 text-sm sm:text-xs font-mono transition-all cursor-pointer hover:bg-[var(--muted)]/50 py-0.5 px-1 rounded ${
-                checkbox.isChecked 
+                isArchived || checkbox.isChecked 
                   ? 'line-through text-[var(--muted-foreground)]' 
                   : 'text-[var(--foreground)]'
               }`}
diff --git a/src/components/daily/DailySection.tsx b/src/components/daily/DailySection.tsx
index f95f289..d035ca5 100644
--- a/src/components/daily/DailySection.tsx
+++ b/src/components/daily/DailySection.tsx
@@ -93,7 +93,8 @@ export function DailySection({
     isChecked: checkbox.isChecked,
     type: checkbox.type,
     taskId: checkbox.taskId,
-    task: checkbox.task
+    task: checkbox.task,
+    isArchived: checkbox.isArchived
   });
 
   return (
diff --git a/src/components/ui/CheckboxItem.tsx b/src/components/ui/CheckboxItem.tsx
index 3c61323..d8f0ad9 100644
--- a/src/components/ui/CheckboxItem.tsx
+++ b/src/components/ui/CheckboxItem.tsx
@@ -14,6 +14,7 @@ export interface CheckboxItemData {
     id: string;
     title: string;
   };
+  isArchived?: boolean;
 }
 
 interface CheckboxItemProps {
@@ -112,15 +113,24 @@ export function CheckboxItem({
     return 'border-l-green-500';
   };
 
+  // Vérifier si la tâche est archivée
+  const isArchived = item.isArchived;
+  
   return (
-    <div className={`flex items-center gap-3 px-3 py-2 sm:py-1.5 sm:gap-2 rounded border transition-colors group border-l-4 ${getTypeBorderColor()} border-t-[var(--border)]/30 border-r-[var(--border)]/30 border-b-[var(--border)]/30 hover:border-t-[var(--border)] hover:border-r-[var(--border)] hover:border-b-[var(--border)] ${className}`}>
+    <div className={`flex items-center gap-3 px-3 py-2 sm:py-1.5 sm:gap-2 rounded border transition-colors group border-l-4 ${getTypeBorderColor()} border-t-[var(--border)]/30 border-r-[var(--border)]/30 border-b-[var(--border)]/30 hover:border-t-[var(--border)] hover:border-r-[var(--border)] hover:border-b-[var(--border)] ${
+      isArchived ? 'opacity-60 bg-[var(--muted)]/20' : ''
+    } ${className}`}>
       {/* Checkbox */}
       <input
         type="checkbox"
-        checked={isChecked}
+        checked={isArchived ? false : isChecked}
         onChange={handleOptimisticToggle}
-        disabled={saving}
-        className="w-4 h-4 md:w-3.5 md:h-3.5 rounded border border-[var(--border)] text-[var(--primary)] focus:ring-[var(--primary)]/20 focus:ring-1"
+        disabled={saving || isArchived}
+        className={`w-4 h-4 md:w-3.5 md:h-3.5 rounded border text-[var(--primary)] focus:ring-[var(--primary)]/20 focus:ring-1 ${
+          isArchived 
+            ? 'border-[var(--muted)] cursor-not-allowed opacity-50' 
+            : 'border-[var(--border)]'
+        }`}
       />
       
       {/* Contenu principal */}
@@ -138,7 +148,7 @@ export function CheckboxItem({
           {/* Texte cliquable pour édition inline */}
           <span 
             className={`flex-1 text-sm sm:text-xs font-mono transition-all cursor-pointer hover:bg-[var(--muted)]/50 py-0.5 px-1 rounded ${
-              item.isChecked 
+              isArchived || item.isChecked 
                 ? 'line-through text-[var(--muted-foreground)]' 
                 : 'text-[var(--foreground)]'
             }`}
diff --git a/src/lib/types.ts b/src/lib/types.ts
index 465c4a9..6e4acd2 100644
--- a/src/lib/types.ts
+++ b/src/lib/types.ts
@@ -435,6 +435,7 @@ export interface DailyCheckbox {
   order: number;
   taskId?: string;
   task?: Task; // Relation optionnelle vers une tâche
+  isArchived?: boolean;
   createdAt: Date;
   updatedAt: Date;
 }
diff --git a/src/services/task-management/daily.ts b/src/services/task-management/daily.ts
index a713352..517e010 100644
--- a/src/services/task-management/daily.ts
+++ b/src/services/task-management/daily.ts
@@ -235,6 +235,7 @@ export class DailyService {
         jiraKey: checkbox.task.jiraKey || undefined,
         assignee: checkbox.task.assignee || undefined
       } : undefined,
+      isArchived: checkbox.text.includes('[ARCHIVÉ]'),
       createdAt: checkbox.createdAt,
       updatedAt: checkbox.updatedAt
     };
diff --git a/src/services/task-management/tasks.ts b/src/services/task-management/tasks.ts
index dda499b..df8c211 100644
--- a/src/services/task-management/tasks.ts
+++ b/src/services/task-management/tasks.ts
@@ -245,6 +245,7 @@ export class TasksService {
         jiraType: checkbox.task.jiraType ?? undefined,
         assignee: checkbox.task.assignee ?? undefined
       } : undefined,
+      isArchived: checkbox.text.includes('[ARCHIVÉ]'),
       createdAt: checkbox.createdAt,
       updatedAt: checkbox.updatedAt
     }));