diff --git a/idn/beta/schemas/ApprovalBatch.yaml b/idn/beta/schemas/ApprovalBatch.yaml
index ae2d12b1..43c271d7 100644
--- a/idn/beta/schemas/ApprovalBatch.yaml
+++ b/idn/beta/schemas/ApprovalBatch.yaml
@@ -5,7 +5,8 @@ properties:
     example: 38453251-6be2-5f8f-df93-5ce19e295837
     description: ID of the batch
   batchSize:
-    type: int64
+    type: integer
+    format: int64
     example: 100
     description: How many approvals are going to be in this batch. Defaults to 1 if not provided.
 description: Batch properties if an approval is sent via batching.