diff --git a/scripts/seed-data.ts b/scripts/seed-data.ts
index 6933628..0414a48 100644
--- a/scripts/seed-data.ts
+++ b/scripts/seed-data.ts
@@ -10,28 +10,44 @@ async function seedTestData() {
 
   const testTasks = [
     {
-      title: '🎨 Redesign du dashboard',
-      description: 'Créer une interface moderne et intuitive pour le tableau de bord principal',
+      title: '🎨 Design System Implementation',
+      description: 'Create and implement a comprehensive design system with reusable components',
       status: 'in_progress' as TaskStatus,
       priority: 'high' as TaskPriority,
       tags: ['design', 'ui', 'frontend'],
-      dueDate: new Date('2025-01-20')
+      dueDate: new Date('2025-12-31')
     },
     {
-      title: '🔧 Optimiser les performances API',
-      description: 'Améliorer les temps de réponse des endpoints et ajouter la pagination',
+      title: '🔧 API Performance Optimization',
+      description: 'Optimize API endpoints response time and implement pagination',
       status: 'todo' as TaskStatus,
       priority: 'medium' as TaskPriority,
       tags: ['backend', 'performance', 'api'],
-      dueDate: new Date('2025-01-25')
+      dueDate: new Date('2025-12-15')
     },
     {
-      title: '✅ Tests unitaires composants',
-      description: 'Ajouter des tests Jest/RTL pour les composants principaux',
-      status: 'done' as TaskStatus,
+      title: '✅ Test Coverage Improvement',
+      description: 'Increase test coverage for core components and services',
+      status: 'todo' as TaskStatus,
       priority: 'medium' as TaskPriority,
-      tags: ['testing', 'jest', 'quality'],
-      dueDate: new Date('2025-01-10')
+      tags: ['testing', 'quality'],
+      dueDate: new Date('2025-12-20')
+    },
+    {
+      title: '📱 Mobile Responsive Design',
+      description: 'Ensure all pages are fully responsive on mobile devices',
+      status: 'todo' as TaskStatus,
+      priority: 'high' as TaskPriority,
+      tags: ['frontend', 'mobile', 'ui'],
+      dueDate: new Date('2025-12-10')
+    },
+    {
+      title: '🔒 Security Audit',
+      description: 'Conduct a comprehensive security audit of the application',
+      status: 'backlog' as TaskStatus,
+      priority: 'urgent' as TaskPriority,
+      tags: ['security', 'audit'],
+      dueDate: new Date('2026-01-15')
     }
   ];
 
diff --git a/scripts/seed-tags.ts b/scripts/seed-tags.ts
index 4485237..47726ec 100644
--- a/scripts/seed-tags.ts
+++ b/scripts/seed-tags.ts
@@ -4,14 +4,17 @@ async function seedTags() {
   console.log('🏷️ Création des tags de test...');
 
   const testTags = [
-    { name: 'Frontend', color: '#3B82F6' },
-    { name: 'Backend', color: '#EF4444' },
-    { name: 'Bug', color: '#F59E0B' },
-    { name: 'Feature', color: '#10B981' },
-    { name: 'Urgent', color: '#EC4899' },
-    { name: 'Design', color: '#8B5CF6' },
-    { name: 'API', color: '#06B6D4' },
-    { name: 'Database', color: '#84CC16' },
+    { name: 'frontend', color: '#3B82F6' },
+    { name: 'backend', color: '#EF4444' },
+    { name: 'ui', color: '#8B5CF6' },
+    { name: 'design', color: '#EC4899' },
+    { name: 'mobile', color: '#F59E0B' },
+    { name: 'performance', color: '#10B981' },
+    { name: 'api', color: '#06B6D4' },
+    { name: 'testing', color: '#84CC16' },
+    { name: 'quality', color: '#9333EA' },
+    { name: 'security', color: '#DC2626' },
+    { name: 'audit', color: '#2563EB' },
   ];
 
   for (const tagData of testTags) {