diff --git a/webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/ApiSongRoutes.kt b/webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/ApiSongRoutes.kt
index c9e119f..82de72d 100644
--- a/webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/ApiSongRoutes.kt
+++ b/webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/ApiSongRoutes.kt
@@ -20,6 +20,7 @@ data class SongsDTO(
     val reqName: String
 )
 
+@Serializable
 data class SongsResponseDTO(
     val current: SongsDTO? = null,
     val next: List<SongsDTO> = emptyList()