diff --git a/config/database-postgres.js b/config/database-postgres.js
index 2708c25..584f60c 100644
--- a/config/database-postgres.js
+++ b/config/database-postgres.js
@@ -74,6 +74,7 @@ async function initDatabase() {
         text TEXT NOT NULL,
         completed BOOLEAN DEFAULT FALSE,
         completed_at TIMESTAMP,
+        priority BOOLEAN DEFAULT FALSE,
         position INTEGER DEFAULT 0,
         created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
       )
@@ -87,6 +88,7 @@ async function initDatabase() {
         text TEXT NOT NULL,
         completed BOOLEAN DEFAULT FALSE,
         completed_at TIMESTAMP,
+        priority BOOLEAN DEFAULT FALSE,
         created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
       )
     `);
diff --git a/package.json b/package.json
index bd2bc94..636d780 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
     "docker:logs": "docker-compose logs -f",
     "docker:restart": "docker-compose restart",
     "db:migrate": "node scripts/add-cleanup-tracking-fields.js",
+    "db:migrate:priority": "node scripts/add-priority-field.js",
     "db:cleanup": "node scripts/database-cleanup.js",
     "db:cleanup:dry-run": "DRY_RUN=true node scripts/database-cleanup.js"
   },
diff --git a/routes/todos.routes.js b/routes/todos.routes.js
index 82a77ac..c89d892 100644
--- a/routes/todos.routes.js
+++ b/routes/todos.routes.js
@@ -17,10 +17,10 @@ router.use(authenticateToken);
 router.get('/', async (req, res) => {
   try {
     const todos = await getAll(`
-      SELECT id, text, completed, created_at
+      SELECT id, text, completed, priority, created_at
       FROM global_todos
       WHERE user_id = $1
-      ORDER BY created_at DESC
+      ORDER BY priority DESC, created_at DESC
     `, [req.user.id]);
 
     res.json(todos);
@@ -59,6 +59,7 @@ router.post('/',
         id: result.id,
         text,
         completed: false,
+        priority: false,
         created_at: new Date().toISOString()
       });
     } catch (error) {
@@ -75,7 +76,8 @@ router.post('/',
 router.put('/:id',
   [
     body('text').optional().trim().notEmpty(),
-    body('completed').optional().isBoolean()
+    body('completed').optional().isBoolean(),
+    body('priority').optional().isBoolean()
   ],
   async (req, res) => {
     try {
@@ -84,7 +86,7 @@ router.put('/:id',
         return res.status(400).json({ error: 'Données invalides', details: errors.array() });
       }
 
-      const { text, completed } = req.body;
+      const { text, completed, priority } = req.body;
 
       // Vérifier que le todo appartient à l'utilisateur
       const todo = await getOne('SELECT id FROM global_todos WHERE id = $1 AND user_id = $2', [req.params.id, req.user.id]);
@@ -106,6 +108,11 @@ router.put('/:id',
         updates.push(`completed = $${paramCount}`);
         params.push(completed ? 1 : 0);
       }
+      if (priority !== undefined) {
+        paramCount++;
+        updates.push(`priority = $${paramCount}`);
+        params.push(priority ? 1 : 0);
+      }
 
       if (updates.length > 0) {
         paramCount++;
@@ -145,6 +152,30 @@ router.patch('/:id/toggle', async (req, res) => {
   }
 });
 
+/**
+ * PATCH /api/todos/:id/priority
+ * Basculer l'état priority d'un todo
+ */
+router.patch('/:id/priority', async (req, res) => {
+  try {
+    // Vérifier que le todo appartient à l'utilisateur
+    const todo = await getOne('SELECT id, priority FROM global_todos WHERE id = $1 AND user_id = $2', [req.params.id, req.user.id]);
+    if (!todo) {
+      return res.status(404).json({ error: 'Todo non trouvé' });
+    }
+
+    const newPriority = todo.priority ? 0 : 1;
+    await runQuery('UPDATE global_todos SET priority = $1 WHERE id = $2', [newPriority, req.params.id]);
+
+    logger.info(`Todo global ${newPriority ? 'marqué prioritaire' : 'démarqué prioritaire'} (ID: ${req.params.id}) par ${req.user.username}`);
+
+    res.json({ message: 'Priorité modifiée avec succès', priority: newPriority === 1 });
+  } catch (error) {
+    logger.error('Erreur lors du toggle de la priorité:', error);
+    res.status(500).json({ error: 'Erreur serveur' });
+  }
+});
+
 /**
  * DELETE /api/todos/:id
  * Supprimer un todo global
diff --git a/scripts/add-priority-field.js b/scripts/add-priority-field.js
new file mode 100644
index 0000000..37f2888
--- /dev/null
+++ b/scripts/add-priority-field.js
@@ -0,0 +1,87 @@
+#!/usr/bin/env node
+
+/**
+ * Script de migration pour ajouter le champ priority aux tâches
+ * - priority (BOOLEAN) pour global_todos
+ * - priority (BOOLEAN) pour note_todos
+ */
+
+const { Pool } = require('pg');
+
+const DATABASE_URL = process.env.DATABASE_URL ||
+  `postgresql://${process.env.PGUSER || 'noteflow'}:${process.env.PGPASSWORD || 'noteflow_secure_password_change_me'}@${process.env.PGHOST || 'postgres'}:${process.env.PGPORT || '5499'}/${process.env.PGDATABASE || 'noteflow'}`;
+
+async function migrate() {
+  const pool = new Pool({ connectionString: DATABASE_URL });
+
+  try {
+    console.log('\n╔════════════════════════════════════════════════════════════╗');
+    console.log('║   MIGRATION: Ajout du champ priority aux tâches          ║');
+    console.log('╚════════════════════════════════════════════════════════════╝\n');
+
+    const client = await pool.connect();
+
+    try {
+      await client.query('BEGIN');
+
+      // 1. Ajouter priority à la table global_todos
+      console.log('📝 Ajout du champ priority à la table global_todos...');
+      await client.query(`
+        ALTER TABLE global_todos
+        ADD COLUMN IF NOT EXISTS priority BOOLEAN DEFAULT FALSE
+      `);
+      console.log('✅ Champ priority ajouté à global_todos\n');
+
+      // 2. Ajouter priority à la table note_todos
+      console.log('📝 Ajout du champ priority à la table note_todos...');
+      await client.query(`
+        ALTER TABLE note_todos
+        ADD COLUMN IF NOT EXISTS priority BOOLEAN DEFAULT FALSE
+      `);
+      console.log('✅ Champ priority ajouté à note_todos\n');
+
+      // 3. Créer un index pour améliorer les performances de tri par priorité
+      console.log('🔧 Création des index pour les tâches prioritaires...');
+      await client.query(`
+        CREATE INDEX IF NOT EXISTS idx_global_todos_priority
+        ON global_todos(priority DESC, created_at DESC)
+      `);
+      await client.query(`
+        CREATE INDEX IF NOT EXISTS idx_note_todos_priority
+        ON note_todos(priority DESC, position)
+      `);
+      console.log('✅ Index créés avec succès\n');
+
+      await client.query('COMMIT');
+
+      console.log('╔════════════════════════════════════════════════════════════╗');
+      console.log('║              ✅ MIGRATION TERMINÉE AVEC SUCCÈS            ║');
+      console.log('╚════════════════════════════════════════════════════════════╝\n');
+
+      console.log('📝 RÉSUMÉ DES CHANGEMENTS:\n');
+      console.log('• Champ priority (BOOLEAN) ajouté à global_todos');
+      console.log('• Champ priority (BOOLEAN) ajouté à note_todos');
+      console.log('• Index créés pour optimiser le tri par priorité');
+      console.log('• Valeur par défaut: FALSE (non prioritaire)\n');
+
+      console.log('💡 UTILISATION:\n');
+      console.log('Les tâches peuvent maintenant être marquées comme prioritaires');
+      console.log('avec une étoile dans l\'interface.\n');
+
+    } catch (error) {
+      await client.query('ROLLBACK');
+      throw error;
+    } finally {
+      client.release();
+    }
+
+    await pool.end();
+
+  } catch (error) {
+    console.error('\n❌ Erreur:', error.message);
+    console.error(error.stack);
+    process.exit(1);
+  }
+}
+
+migrate();
diff --git a/src/pages/Index.tsx b/src/pages/Index.tsx
index aacbecd..a23c1b2 100644
--- a/src/pages/Index.tsx
+++ b/src/pages/Index.tsx
@@ -15,7 +15,7 @@ import { Command, CommandEmpty, CommandGroup, CommandInput, CommandItem, Command
 import { RichTextEditor } from "@/components/RichTextEditor";
 import {
   PlusCircle, Search, User, LogOut, Settings, ChevronDown, Plus, Archive, Trash2,
-  Image as ImageIcon, CheckSquare, FileText, Rss, ExternalLink, RefreshCw, Key, Zap, Paperclip, X, Edit, Calendar as CalendarIcon, Tag as TagIcon, MessageSquare, Send, Check, ChevronsUpDown
+  Image as ImageIcon, CheckSquare, FileText, Rss, ExternalLink, RefreshCw, Key, Zap, Paperclip, X, Edit, Calendar as CalendarIcon, Tag as TagIcon, MessageSquare, Send, Check, ChevronsUpDown, Star
 } from "lucide-react";
 import AuthService from "@/services/AuthService";
 import AdminService from "@/services/AdminService";
@@ -553,6 +553,15 @@ const Index = () => {
     }
   };
 
+  const handleToggleTodoPriority = async (todoId: number) => {
+    try {
+      await TodosService.togglePriority(todoId);
+      setTodos(todos.map(t => t.id === todoId ? { ...t, priority: !t.priority } : t));
+    } catch (error) {
+      showError("Erreur lors de la mise à jour de la priorité");
+    }
+  };
+
   const handleDeleteTodo = async (todoId: number) => {
     try {
       await TodosService.deleteTodo(todoId);
@@ -1579,6 +1588,15 @@ const Index = () => {
                           <span className="text-sm flex-1 leading-snug">
                             {todo.text}
                           </span>
+                          <Button
+                            variant="ghost"
+                            size="icon"
+                            className={`h-7 w-7 ${todo.priority ? '' : 'opacity-0 group-hover:opacity-100'} transition-opacity`}
+                            onClick={() => todo.id && handleToggleTodoPriority(todo.id)}
+                            title={todo.priority ? "Retirer la priorité" : "Marquer comme prioritaire"}
+                          >
+                            <Star className={`h-3.5 w-3.5 ${todo.priority ? 'fill-yellow-400 text-yellow-400' : ''}`} />
+                          </Button>
                           <Button
                             variant="ghost"
                             size="icon"
@@ -1631,6 +1649,9 @@ const Index = () => {
                           <span className="text-sm flex-1 line-through text-muted-foreground leading-snug">
                             {todo.text}
                           </span>
+                          {todo.priority && (
+                            <Star className="h-3.5 w-3.5 fill-yellow-400 text-yellow-400 opacity-50" />
+                          )}
                           <Button
                             variant="ghost"
                             size="icon"
diff --git a/src/services/TodosService.ts b/src/services/TodosService.ts
index cac7ea5..580d296 100644
--- a/src/services/TodosService.ts
+++ b/src/services/TodosService.ts
@@ -4,7 +4,7 @@ export interface Todo {
   id?: number;
   text: string;
   completed: boolean;
-  priority?: 'low' | 'medium' | 'high';
+  priority?: boolean;
   due_date?: string;
   created_at?: string;
 }
@@ -32,9 +32,9 @@ class TodosService {
     }
   }
 
-  async createTodo(text: string, priority?: 'low' | 'medium' | 'high'): Promise<Todo> {
+  async createTodo(text: string, priority?: boolean): Promise<Todo> {
     try {
-      const response = await axios.post(this.baseURL, { text, priority, completed: false }, this.getAuthHeader());
+      const response = await axios.post(this.baseURL, { text, priority: priority || false, completed: false }, this.getAuthHeader());
       return response.data;
     } catch (error) {
       console.error('Error creating todo:', error);
@@ -71,6 +71,16 @@ class TodosService {
       throw error;
     }
   }
+
+  async togglePriority(todoId: number): Promise<boolean> {
+    try {
+      await axios.patch(`${this.baseURL}/${todoId}/priority`, {}, this.getAuthHeader());
+      return true;
+    } catch (error) {
+      console.error('Error toggling priority:', error);
+      throw error;
+    }
+  }
 }
 
 export default new TodosService();