diff --git a/apps/server/src/entities/deposit.entity.ts b/apps/server/src/entities/deposit.entity.ts
index 509bf72..5423b77 100644
--- a/apps/server/src/entities/deposit.entity.ts
+++ b/apps/server/src/entities/deposit.entity.ts
@@ -49,13 +49,13 @@ export class Deposit {
   @Column({ name: 'refund_status', length: 30, nullable: true })
   refundStatus: string | null; // pending | head_teacher_approved | finance_approved | refunded
 
-  @Column({ name: 'refund_requested_at', nullable: true })
+  @Column({ name: 'refund_requested_at', type: 'datetime', nullable: true })
   refundRequestedAt: Date | null;
 
   @Column({ name: 'refund_approved_by', type: 'integer', nullable: true })
   refundApprovedBy: number | null;
 
-  @Column({ name: 'refund_approved_at', nullable: true })
+  @Column({ name: 'refund_approved_at', type: 'datetime', nullable: true })
   refundApprovedAt: Date | null;
 
   @OneToMany(() => DepositInstallment, (i) => i.deposit, { cascade: true, eager: true })