diff --git a/src/entity/surgery_type.ts b/src/entity/surgery_type.ts
index a26687b..427f266 100644
--- a/src/entity/surgery_type.ts
+++ b/src/entity/surgery_type.ts
@@ -1,4 +1,4 @@
-import { Entity, PrimaryGeneratedColumn, Column } from "typeorm";
+import { Entity, PrimaryGeneratedColumn, Column, DeleteDateColumn, UpdateDateColumn, CreateDateColumn } from "typeorm";
 
 @Entity("surgery_types")
 export class SurgeryType {
@@ -11,4 +11,25 @@ export class SurgeryType {
 		unique: true,
 	})
 	name: string;
+
+	@Column()
+	@CreateDateColumn()
+	created_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	created_by: string;
+
+	@Column({ nullable: true })
+	@UpdateDateColumn()
+	updated_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	updated_by: string;
+
+	@Column({ nullable: true })
+	@DeleteDateColumn()
+	deleted_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	deleted_by: string;
 }