diff --git a/internal/transform/schema.go b/internal/transform/schema.go
index cbe190fa..15b8312a 100644
--- a/internal/transform/schema.go
+++ b/internal/transform/schema.go
@@ -74,7 +74,7 @@ type TransactionOutput struct {
 	TotalNonRefundableResourceFeeCharged int64          `json:"non_refundable_resource_fee_charged"`
 	TotalRefundableResourceFeeCharged    int64          `json:"refundable_resource_fee_charged"`
 	RentFeeCharged                       int64          `json:"rent_fee_charged"`
-	Signatures                           []string       `json:"signatures"`
+	Signatures                           pq.StringArray `json:"signatures"`
 }
 
 type LedgerTransactionOutput struct {