diff --git a/composer.json b/composer.json
index bb97083..92e7b66 100644
--- a/composer.json
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@@ -16,6 +16,7 @@
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diff --git a/composer.lock b/composer.lock
index 1b69d7c..ee90f9e 100644
--- a/composer.lock
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@@ -535,6 +757,84 @@
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@@ -601,15 +901,365 @@
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+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/nicolas-grekas",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2025-07-15T13:41:35+00:00"
         }
     ],
     "packages-dev": [],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": {},
+    "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
-    "platform": {},
-    "platform-dev": {},
-    "plugin-api-version": "2.6.0"
+    "platform": {
+        "php": "^8.0",
+        "ext-mbstring": "*"
+    },
+    "platform-dev": [],
+    "plugin-api-version": "2.3.0"
 }
diff --git a/index.php b/index.php
index 7f80540..353f138 100644
--- a/index.php
+++ b/index.php
@@ -10,11 +10,11 @@ use Uwil\ArcadiaGenesisPhpClient\Datas\IncoDatas;
 
 require_once 'vendor/autoload.php';
 
-// $employee = EmployeesDatas::getById("0115590");
-// var_dump($employee);
+$employee = EmployeesDatas::getById("0115590");
+var_dump($employee);
 
-$employees = EmployeesDatas::getListModifiedSince("01/09/2025 00:00", ['LDCSER', 'SLELA', 'DDE']);
-var_dump($employees);
+// $employees = EmployeesDatas::getListModifiedSince("01/01/2026 00:00", ['LDCSER', 'SLELA', 'DDE']);
+// var_dump($employees);
 
 // $inco = IncoDatas::getById("2842");
 // var_dump($inco);
diff --git a/src/Transport.php b/src/Transport.php
index 87674e1..0335e95 100644
--- a/src/Transport.php
+++ b/src/Transport.php
@@ -2,6 +2,7 @@
 
 namespace Uwil\ArcadiaGenesisPhpClient;
 
+use Carbon\Carbon;
 use GuzzleHttp\Psr7;
 use GuzzleHttp\Client;
 use GuzzleHttp\Exception\ClientException;
@@ -11,7 +12,7 @@ use InvalidArgumentException;
 class Transport
 {
 
-    private static string $endpoint = "https://lab501-arc05402.lesidc.com"; // FIXME : Move this
+    private static string $endpoint = "https://lab501-arc05402-api.lesidc.com"; // FIXME : Move this
     private static string $apiKey = "11319-1127611241-11748-11917-12156891612247-10244-11653-125778522-1195511335-11382-10886-108424242324222424242322242424232423"; // FIXME : Move this
     private static string $apiSecret = "-1046012368-8940-10144-1095-12022-10631103331003311372-107631276111238-12022-9129-1202-1223310126-10026957612620-10828100522324232224232414232423232423232324241424232324";
 
@@ -22,28 +23,31 @@ class Transport
 
     public static function call(array $params)
     {
-
+        $path = "/get";
         $client = new Client([
             'base_uri' => sprintf(
                 "%s%s",
                 self::$endpoint,
-                "/gaston/api/get",
+                $path,
             ),
-            //'timeout'  => 10.0,
+            'timeout'  => 2.0,
         ]);
 
         try {
 
-            $response = $client->request('GET', self::buildApiRequest($params), [
+            $timestamp = Carbon::now('UTC')->toIso8601ZuluString();
+            $builtParams = self::buildApiRequest($params);
+            $response = $client->request('GET', '?'.$builtParams, [
                 'headers' => [
-                    'Content-Type' => 'application/json',
-                    'API-KEY' => self::$apiKey,
-                    'API-SIGNATURE' => self::getApiSignature()
+                    'Content-Type'      => 'application/json',
+                    'X-API-KEY'         => self::$apiKey,
+                    'X-API-SIGNATURE'   => self::getApiSignature($path, $builtParams, $timestamp),
+                    'X-TIMESTAMP'       => $timestamp,
                 ]
             ]);
 
             $body = $response->getBody()->getContents();
-            $utf8_string = \mb_convert_encoding($body, 'UTF-8', 'ISO-8859-1'); // FIXME: Non bah non...
+            //$utf8_string = \mb_convert_encoding($body, 'UTF-8', 'ISO-8859-1'); // FIXME: Non bah non...
             var_dump($body);
             exit;
             return $body ? json_decode($utf8_string) : null;
@@ -58,7 +62,7 @@ class Transport
         } catch (ServerException $e) { // FIXME: L'API retourne 503 pour certains calls mais pas pour d'autres, le serveur n'est donc pas en maintenance.
             var_dump($e);
             exit;
-            die('herde');
+            die('stop');
         }
     }
 
@@ -128,19 +132,31 @@ class Transport
             }
             $queryParams['T_OPES'] = implode('|', $params['T_OPES']);
         }
+        uksort($queryParams, 'strcmp');
+        //var_dump($queryParams);exit;
         // Construire la chaîne de requête
         // FIXME : devrait être -> return '?' . http_build_query($queryParams); ou param query de guzzle mais cela lève une METAEXCEPTION
-        return '?' . self::build_query_without_encoding($queryParams);
+        return http_build_query($queryParams, '', null,  PHP_QUERY_RFC3986);        //return '?' . http_build_query($queryParams, '', null,  PHP_QUERY_RFC3986);
+        //return '?' . self::build_query_without_encoding($queryParams);
     }
 
-    private static function getApiSignature()
+    private static function getApiSignature(string $path, string $params, string $timestamp)
     {
+        $string = sprintf(
+            "%s\n%s\n%s\n%s\n%s\n%s",
+            "GET",
+            str_replace("https://", '', self::$endpoint),
+            $path,
+            $params,
+            $timestamp,
+            ''
+        );
+        //var_dump($string);exit;
         return base64_encode(
             hash_hmac(
                 'sha256',
-                self::$apiKey,
-                self::$apiSecret,
-                true
+                $string,
+                self::$apiSecret
             )
         );
     }