diff --git a/src/main/resources/db/changelog/changes/20250509_01_derek/01_update_stock_in_ref.sql b/src/main/resources/db/changelog/changes/20250509_01_derek/01_update_stock_in_ref.sql
index e69de29..e0c7b9b 100644
--- a/src/main/resources/db/changelog/changes/20250509_01_derek/01_update_stock_in_ref.sql
+++ b/src/main/resources/db/changelog/changes/20250509_01_derek/01_update_stock_in_ref.sql
@@ -0,0 +1,12 @@
+--liquibase formatted sql
+
+--changeset derek:update stock in ref cols
+ALTER TABLE `stock_in`
+DROP COLUMN `refId`,
+DROP COLUMN `refType`,
+ADD COLUMN `purchaseOrderId` INT NULL,
+ADD COLUMN `stockOutId` INT NULL,
+ADD CONSTRAINT `FK_STOCK_IN_JOB_ORDER_ON_PURCHASEORDERID`
+    FOREIGN KEY (`purchaseOrderId`) REFERENCES `purchase_order` (`id`),
+ADD CONSTRAINT `FK_STOCK_IN_STOCK_OUT_ON_STOCKOUTID`
+    FOREIGN KEY (`stockOutId`) REFERENCES `stock_out` (`id`);
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