diff --git a/src/main/kotlin/club/sakunadaisuki/pcrediveclanrecordbackend/model/BattleRecord.kt b/src/main/kotlin/club/sakunadaisuki/pcrediveclanrecordbackend/model/BattleRecord.kt
index 03ada73..be54fcc 100644
--- a/src/main/kotlin/club/sakunadaisuki/pcrediveclanrecordbackend/model/BattleRecord.kt
+++ b/src/main/kotlin/club/sakunadaisuki/pcrediveclanrecordbackend/model/BattleRecord.kt
@@ -1,8 +1,10 @@
 package club.sakunadaisuki.pcrediveclanrecordbackend.model
 
 import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 import java.time.Instant
 
+@Serializable
 data class BattleRecord(
     val date: String,   // yyyy-MM-dd
     var uid: String,
@@ -12,6 +14,7 @@ data class BattleRecord(
     @SerialName("attack_detail_list") val attackDetailList: List<AttackDetail>
 )
 
+@Serializable
 data class AttackDetail(
     @SerialName("boss_round") val bossRound: Int,     // 周目
     @SerialName("boss_index") val bossIndex: Int, // 1~5 號王