diff --git a/src/main/java/com/ffii/fpsms/modules/master/entity/Bom.kt b/src/main/java/com/ffii/fpsms/modules/master/entity/Bom.kt
index 0cd38cf..caf3b71 100644
--- a/src/main/java/com/ffii/fpsms/modules/master/entity/Bom.kt
+++ b/src/main/java/com/ffii/fpsms/modules/master/entity/Bom.kt
@@ -26,6 +26,12 @@ open class Bom : BaseEntity<Long>() {
     @Column
     open var allergicSubstances: Int? = null
 
+    @Column
+    open var timeSequence: Int? = null
+
+    @Column
+    open var complexity: Int? = null
+
     @JsonBackReference
     @OneToOne
     @JoinColumn(name = "itemId")
diff --git a/src/main/resources/db/changelog/changes/20251213_01_KelvinY/01_add_timeSequence_complexity_to_bom.sql b/src/main/resources/db/changelog/changes/20251213_01_KelvinY/01_add_timeSequence_complexity_to_bom.sql
new file mode 100644
index 0000000..4723b0d
--- /dev/null
+++ b/src/main/resources/db/changelog/changes/20251213_01_KelvinY/01_add_timeSequence_complexity_to_bom.sql
@@ -0,0 +1,6 @@
+-- liquibase formatted sql
+-- changeset KelvinY:add_timeSequence_complexity_to_bom
+
+ALTER TABLE `fpsmsdb`.`bom`
+  ADD COLUMN `timeSequence` INT NULL DEFAULT 0 AFTER `allergicSubstances`,
+  ADD COLUMN `complexity` INT NULL DEFAULT 0 AFTER `timeSequence`;
\ No newline at end of file