diff --git a/src/Api/AbstractAPI.php b/src/Api/AbstractAPI.php
index 7fb18797..1a40d3f2 100644
--- a/src/Api/AbstractAPI.php
+++ b/src/Api/AbstractAPI.php
@@ -2,11 +2,11 @@
 
 namespace Eduardokum\LaravelBoleto\Api;
 
-use Eduardokum\LaravelBoleto\Contracts\Api\Api;
 use stdClass;
 use Illuminate\Support\Str;
 use Eduardokum\LaravelBoleto\Util;
 use Eduardokum\LaravelBoleto\Pessoa;
+use Eduardokum\LaravelBoleto\Contracts\Api\Api;
 use Eduardokum\LaravelBoleto\Api\Exception\CurlException;
 use Eduardokum\LaravelBoleto\Api\Exception\HttpException;
 use Eduardokum\LaravelBoleto\Exception\ValidationException;
diff --git a/src/Contracts/Api/Api.php b/src/Contracts/Api/Api.php
index 30d8110e..d900c541 100644
--- a/src/Contracts/Api/Api.php
+++ b/src/Contracts/Api/Api.php
@@ -1,38 +1,64 @@
 <?php
+
 namespace Eduardokum\LaravelBoleto\Contracts\Api;
 
-use Carbon\Carbon;
-use Eduardokum\LaravelBoleto\Contracts\Boleto\Boleto;
-use Eduardokum\LaravelBoleto\Contracts\Pessoa as PessoaContract;
+use Eduardokum\LaravelBoleto\Contracts\Boleto\BoletoAPI;
 
 interface Api
 {
-    public function createBoleto(Boleto $boleto);
+    public function createBoleto(BoletoAPI $boleto);
+
     public function retrieveNossoNumero($nossoNumero);
+
     public function retrieveID($id);
+
     public function cancelNossoNumero($nossoNumero, $motivo);
+
     public function cancelID($id, $motivo);
+
     public function retrieveList($inputedParams = []);
+
     public function getPdfNossoNumero($nossoNumero);
+
     public function getPdfID($id);
+
     public function createWebhook($url, $type = 'all');
-    public function retrieve(Boleto $boleto);
-    public function cancel(Boleto $boleto, $motivo);
-    public function getPdf(Boleto $boleto);
+
+    public function retrieve(BoletoAPI $boleto);
+
+    public function cancel(BoletoAPI $boleto, $motivo);
+
+    public function getPdf(BoletoAPI $boleto);
+
     public function getBaseUrl();
+
     public function getConta();
+
     public function getCertificado();
+
     public function getCertificadoChave();
+
     public function getCertificadoSenha();
+
     public function getIdentificador();
+
     public function getSenha();
+
     public function getCnpj();
+
     public function getClientId();
+
     public function getClientSecret();
+
     public function getAccessToken();
+
     public function getBeneficiario();
+
     public function unsetDebug();
+
     public function isDebug();
+
     public function getLog();
+
     public function clearLog();
 }