diff --git a/src/Support/Signature.php b/src/Support/Signature.php
index dfa80a4..e42ec2b 100644
--- a/src/Support/Signature.php
+++ b/src/Support/Signature.php
@@ -36,9 +36,9 @@ private function __construct(string $hashSecret)
     /**
      * Tạo đối tượng singleton.
      */
-    public static function make(string $hashSecret): Signature
+    public static function make(string $hashSecret, bool $forceCreate = false): Signature
     {
-        if (static::$instance === null) {
+        if (static::$instance === null || $forceCreate) {
             static::$instance = new static($hashSecret);
         }