diff --git a/src/main/resources/dbmigration/1.34.sql b/src/main/resources/dbmigration/1.34.sql
new file mode 100644
index 0000000..72fa1d0
--- /dev/null
+++ b/src/main/resources/dbmigration/1.34.sql
@@ -0,0 +1,7 @@
+-- drop dependencies
+alter table product drop constraint if exists ck_product_uom;
+-- apply alter tables
+alter table purchase_order alter column all_loading_site set default false;
+alter table purchase_order alter column all_unloading_site set default false;
+-- apply post alter
+alter table product add constraint ck_product_uom check ( uom in ('KG','CFT','TON','LTR','NUMBER','MTR','BOX','CUM','PACKET','ALL','NOS','LITER'));
diff --git a/src/main/resources/dbmigration/model/1.34.model.xml b/src/main/resources/dbmigration/model/1.34.model.xml
new file mode 100644
index 0000000..b6d8e7a
--- /dev/null
+++ b/src/main/resources/dbmigration/model/1.34.model.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<migration xmlns="http://ebean-orm.github.io/xml/ns/dbmigration">
+    <changeSet type="apply">
+        <alterColumn columnName="uom" tableName="product" checkConstraint="check ( uom in ('KG','CFT','TON','LTR','NUMBER','MTR','BOX','CUM','PACKET','ALL','NOS','LITER'))" checkConstraintName="ck_product_uom"/>
+        <alterColumn columnName="all_loading_site" tableName="purchase_order" defaultValue="false"/>
+        <alterColumn columnName="all_unloading_site" tableName="purchase_order" defaultValue="false"/>
+    </changeSet>
+</migration>
\ No newline at end of file