diff --git a/admin.php b/admin.php
index 6731f84..1dc6628 100644
--- a/admin.php
+++ b/admin.php
@@ -1,6 +1,13 @@
 <?php
 require_once 'fonctions.php';
 session_start();
+$timeout = 86400;
+if (isset($_SESSION['last_activity']) && time() - $_SESSION['last_activity'] > $timeout) {
+    session_destroy();
+    header('Location: admin.php?action=login');
+    exit;
+}
+$_SESSION['last_activity'] = time();
 
 // Vérifier si un utilisateur est connecté
 function checkAuth() {