diff --git a/src/Fasodev/Sdk/TransactionInterface.php b/src/Fasodev/Sdk/TransactionInterface.php
index f3eff69..e41a9aa 100644
--- a/src/Fasodev/Sdk/TransactionInterface.php
+++ b/src/Fasodev/Sdk/TransactionInterface.php
@@ -9,7 +9,10 @@
 
 namespace Fasodev\Sdk;
 
-
+/**
+ * Interface TransactionInterface
+ * @package Fasodev\Sdk
+ */
 interface TransactionInterface
 {
     public function processPayment();