diff --git a/README.md b/README.md
index 5c10afc..1098402 100644
--- a/README.md
+++ b/README.md
@@ -386,9 +386,8 @@ $result = $cryptopay->invoices->createRecalculation($invoiceId, $params);
 
 ```php
 $invoiceId = '331646a6-c8b5-430d-adfb-021d11ff6cd0';
-$params = ['address' => '0xf3532c1fd002665ec54d46a50787e0c69c76cd44'];
 
-$result = $cryptopay->invoices->createRefund($invoiceId, $params);
+$result = $cryptopay->invoices->createRefund($invoiceId);
 ```
 
 ### List invoice refunds
diff --git a/src/Cryptopay.php b/src/Cryptopay.php
index 63b66bf..ec98fee 100644
--- a/src/Cryptopay.php
+++ b/src/Cryptopay.php
@@ -53,7 +53,7 @@ class Cryptopay
     private RateService $rateService;
     private RiskService $riskService;
 
-    private const VERSION = '2.2.0';
+    private const VERSION = '3.0.0';
 
     private const USER_AGENT = 'Cryptopay-PHP/' . Cryptopay::VERSION . ' PHP/' .  \PHP_VERSION;
     private const USER_AGENT_DEPRECATED = Cryptopay::USER_AGENT . ' (deprecated)';
diff --git a/tests/Api/InvoicesApiTest.php b/tests/Api/InvoicesApiTest.php
index 1954a0c..cbd0081 100644
--- a/tests/Api/InvoicesApiTest.php
+++ b/tests/Api/InvoicesApiTest.php
@@ -73,9 +73,8 @@ public function testcreateRefund()
         $cryptopay = new Cryptopay($this->config);
 
         $invoiceId = '331646a6-c8b5-430d-adfb-021d11ff6cd0';
-        $params = ['address' => '0xf3532c1fd002665ec54d46a50787e0c69c76cd44'];
 
-        $result = $cryptopay->invoices->createRefund($invoiceId, $params);
+        $result = $cryptopay->invoices->createRefund($invoiceId);
 
         $this->assertNotNull($result);
     }