diff --git a/app/Listeners/Updates/Listener.php b/app/Listeners/Updates/Listener.php
index 66b50655..8a4995f5 100644
--- a/app/Listeners/Updates/Listener.php
+++ b/app/Listeners/Updates/Listener.php
@@ -2,6 +2,7 @@
 
 namespace Crater\Listeners\Updates;
 
+// Implementation taken from Akaunting - https://github.com/akaunting/akaunting
 class Listener
 {
     const VERSION = '';
diff --git a/app/Space/SiteApi.php b/app/Space/SiteApi.php
index 7c9ac7ea..86730ea0 100644
--- a/app/Space/SiteApi.php
+++ b/app/Space/SiteApi.php
@@ -6,6 +6,7 @@ use GuzzleHttp\Client;
 use GuzzleHttp\Exception\RequestException;
 use Crater\Setting;
 
+// Implementation taken from Akaunting - https://github.com/akaunting/akaunting
 trait SiteApi
 {