diff --git a/apps/payment/backend/models/__init__.py b/apps/payment/backend/models/__init__.py
index b1a6b95..7c4ba62 100644
--- a/apps/payment/backend/models/__init__.py
+++ b/apps/payment/backend/models/__init__.py
@@ -3,7 +3,13 @@
 # from .user_profile import profile_models
 #
 # TODO: Add all models to backend_models
-backend_models = []
+from backend.services.payment.models import IncomeProfileDoc
+from backend.services.project.models import ProjectDoc
+
+backend_models = [
+    IncomeProfileDoc,
+    ProjectDoc
+]
 # backend_models.extend(code_models)
 # backend_models.extend(user_models)
 # backend_models.extend(profile_models)
diff --git a/apps/payment/backend/services/payment/models.py b/apps/payment/backend/services/payment/models.py
index eebafa7..606668e 100644
--- a/apps/payment/backend/services/payment/models.py
+++ b/apps/payment/backend/services/payment/models.py
@@ -2,7 +2,10 @@ from typing import List, Dict, Optional
 from decimal import Decimal
 from time import time
 from beanie import Document
-from pydantic import BaseModel
+from pydantic import BaseModel, validator
+
+from decimal import Decimal
+from bson import Decimal128
 
 from backend.services.payment.constants import PaymentGateway
 from backend.infra.payment.constants import MoneyCollectionType, PaymentLocation
@@ -32,6 +35,12 @@ class CurrencyAmount(BaseModel):
     amount: Decimal
     currency: str
 
+    @validator("amount", pre=True)
+    def convert_decimal128(cls, value):
+        if isinstance(value, Decimal128):
+            return value.to_decimal()  # Convert MongoDB Decimal128 to Python Decimal
+        return value
+
 
 class Wallet(BaseModel):
     payment_methods: List[PaymentMethod]