diff --git a/src/Command/GenerateCreditMemo.php b/src/Command/GenerateCreditMemo.php
index daa07a40..b9bbdfbc 100644
--- a/src/Command/GenerateCreditMemo.php
+++ b/src/Command/GenerateCreditMemo.php
@@ -17,7 +17,7 @@
 use Sylius\RefundPlugin\Model\ShipmentRefund;
 use Webmozart\Assert\Assert;
 
-final class GenerateCreditMemo
+class GenerateCreditMemo
 {
     /** @var string */
     private $orderNumber;
diff --git a/src/Command/RefundUnits.php b/src/Command/RefundUnits.php
index 3dec95ed..e34b1136 100644
--- a/src/Command/RefundUnits.php
+++ b/src/Command/RefundUnits.php
@@ -17,7 +17,7 @@
 use Sylius\RefundPlugin\Model\ShipmentRefund;
 use Webmozart\Assert\Assert;
 
-final class RefundUnits
+class RefundUnits
 {
     /** @var string */
     private $orderNumber;
diff --git a/src/Command/SendCreditMemo.php b/src/Command/SendCreditMemo.php
index 2d5c155b..88128379 100644
--- a/src/Command/SendCreditMemo.php
+++ b/src/Command/SendCreditMemo.php
@@ -13,7 +13,7 @@
 
 namespace Sylius\RefundPlugin\Command;
 
-final class SendCreditMemo
+class SendCreditMemo
 {
     /** @var string */
     private $number;
diff --git a/src/Event/CreditMemoGenerated.php b/src/Event/CreditMemoGenerated.php
index d50d63a0..4ec861fe 100644
--- a/src/Event/CreditMemoGenerated.php
+++ b/src/Event/CreditMemoGenerated.php
@@ -13,7 +13,7 @@
 
 namespace Sylius\RefundPlugin\Event;
 
-final class CreditMemoGenerated
+class CreditMemoGenerated
 {
     /** @var string */
     private $number;
diff --git a/src/Event/RefundPaymentGenerated.php b/src/Event/RefundPaymentGenerated.php
index 7bd975ba..07ff61cc 100644
--- a/src/Event/RefundPaymentGenerated.php
+++ b/src/Event/RefundPaymentGenerated.php
@@ -13,7 +13,7 @@
 
 namespace Sylius\RefundPlugin\Event;
 
-final class RefundPaymentGenerated
+class RefundPaymentGenerated
 {
     /** @var int */
     private $id;
diff --git a/src/Event/ShipmentRefunded.php b/src/Event/ShipmentRefunded.php
index 6e8e6d78..39bb0dbb 100644
--- a/src/Event/ShipmentRefunded.php
+++ b/src/Event/ShipmentRefunded.php
@@ -13,7 +13,7 @@
 
 namespace Sylius\RefundPlugin\Event;
 
-final class ShipmentRefunded
+class ShipmentRefunded
 {
     /** @var string */
     private $orderNumber;
diff --git a/src/Event/UnitRefunded.php b/src/Event/UnitRefunded.php
index b0b566b3..f730179c 100644
--- a/src/Event/UnitRefunded.php
+++ b/src/Event/UnitRefunded.php
@@ -13,7 +13,7 @@
 
 namespace Sylius\RefundPlugin\Event;
 
-final class UnitRefunded
+class UnitRefunded
 {
     /** @var string */
     private $orderNumber;
diff --git a/src/Event/UnitsRefunded.php b/src/Event/UnitsRefunded.php
index b6f92722..1bfff049 100644
--- a/src/Event/UnitsRefunded.php
+++ b/src/Event/UnitsRefunded.php
@@ -17,7 +17,7 @@
 use Sylius\RefundPlugin\Model\ShipmentRefund;
 use Webmozart\Assert\Assert;
 
-final class UnitsRefunded
+class UnitsRefunded
 {
     /** @var string */
     private $orderNumber;