diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/creator/admin/content/series/CreateSeriesRequest.kt b/src/main/kotlin/kr/co/vividnext/sodalive/creator/admin/content/series/CreateSeriesRequest.kt
index 658c1cc..c7e1a91 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/creator/admin/content/series/CreateSeriesRequest.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/creator/admin/content/series/CreateSeriesRequest.kt
@@ -5,7 +5,7 @@ import kr.co.vividnext.sodalive.common.SodaException
 data class CreateSeriesRequest(
     val title: String,
     val introduction: String,
-    val publishedDaysOfWeek: Set<SeriesPublishedDaysOfWeek>,
+    val publishedDaysOfWeek: MutableSet<SeriesPublishedDaysOfWeek>,
     val keyword: String,
     val genreId: Long = 0,
     val isAdult: Boolean = false,