diff --git a/cg/models/invoice/invoice.py b/cg/models/invoice/invoice.py
index 40ec8ba715..204f55945e 100644
--- a/cg/models/invoice/invoice.py
+++ b/cg/models/invoice/invoice.py
@@ -2,7 +2,7 @@
 
 from typing import Any
 
-from pydantic.v1 import BaseModel
+from pydantic import BaseModel
 
 from cg.constants.priority import PriorityTerms
 from cg.constants.sequencing import RecordType
@@ -21,7 +21,7 @@ class InvoiceContact(BaseModel):
 class InvoiceApplication(BaseModel):
     """Class to collect Application information used in the invoice."""
 
-    version: str
+    version: int
     tag: str
     discounted_price: int
     percent_kth: int
@@ -31,27 +31,27 @@ class InvoiceInfo(BaseModel):
     """Class to collect invoice information used in the invoice report."""
 
     name: str
-    id: str
-    lims_id: str | None
+    id: int
+    lims_id: str | None = None
     application_tag: str
     project: str
-    date: Any | None
+    date: Any | None = None
     price: int
     priority: PriorityTerms
-    price_kth: int | None
-    total_price: int | None
+    price_kth: int | None = None
+    total_price: int | None = None
 
 
 class InvoiceReport(BaseModel):
     """Class that collects information used to create the invoice Excel sheet."""
 
     cost_center: str
-    project_number: str | None
+    project_number: str | None = None
     customer_id: str
     customer_name: str
-    agreement: str | None
+    agreement: str | None = None
     invoice_id: int
     contact: dict
     records: list
-    pooled_samples: Any | None
+    pooled_samples: Any | None = None
     record_type: RecordType