diff --git a/src/entity/trx_transaction_slas.ts b/src/entity/trx_transaction_slas.ts
index dca058c..5b4b861 100644
--- a/src/entity/trx_transaction_slas.ts
+++ b/src/entity/trx_transaction_slas.ts
@@ -33,6 +33,7 @@ export class TrxTransactionSla {
 
 	@Column({
 		length: 256,
+		nullable: true,
 	})
 	end_by: string;