diff --git a/src/main/java/com/ffii/fpsms/modules/master/entity/BomProcess.kt b/src/main/java/com/ffii/fpsms/modules/master/entity/BomProcess.kt
index ef67d9f..c3178a1 100644
--- a/src/main/java/com/ffii/fpsms/modules/master/entity/BomProcess.kt
+++ b/src/main/java/com/ffii/fpsms/modules/master/entity/BomProcess.kt
@@ -21,6 +21,10 @@ open class BomProcess : BaseEntity<Long>() {
     @Column(name = "seqNo", nullable = false)
     open var seqNo: Long? = null
 
+    // in minute
+    @Column(name = "duration", nullable = false)
+    open var duration: Int? = null
+
     @NotNull
     @ManyToOne(optional = false)
     @JoinColumn(name = "bomId", nullable = false)
diff --git a/src/main/resources/db/changelog/changes/20250611_01_derek/03_update_bom_material_col.sql b/src/main/resources/db/changelog/changes/20250611_01_derek/03_update_bom_material_col.sql
new file mode 100644
index 0000000..ade4eff
--- /dev/null
+++ b/src/main/resources/db/changelog/changes/20250611_01_derek/03_update_bom_material_col.sql
@@ -0,0 +1,4 @@
+-- liquibase formatted sql
+-- changeset derek:update_bom_process_add_duration
+ALTER TABLE `bom_process`
+ADD COLUMN `duration` INT(11) NULL AFTER seqNo;
\ No newline at end of file