diff --git a/src/__version__.py b/src/__version__.py
index 22049ab..63af887 100644
--- a/src/__version__.py
+++ b/src/__version__.py
@@ -1 +1 @@
-__version__ = "0.6.2"
+__version__ = "0.6.3"
diff --git a/src/services/payment_gateway.py b/src/services/payment_gateway.py
index e4bd238..c71b16a 100644
--- a/src/services/payment_gateway.py
+++ b/src/services/payment_gateway.py
@@ -345,7 +345,7 @@ async def handle_payment_succeeded(self, payment_id: UUID) -> None:
             }
 
         i18n_kwargs = {
-            "payment_id": transaction.payment_id,
+            "payment_id": str(transaction.payment_id),
             "gateway_type": transaction.gateway_type,
             "final_amount": transaction.pricing.final_amount,
             "discount_percent": transaction.pricing.discount_percent,