diff --git a/backend/src/main/java/io/f1/backend/domain/game/dto/response/RoomSettingResponse.java b/backend/src/main/java/io/f1/backend/domain/game/dto/response/RoomSettingResponse.java
index 161d53ce..019aeff7 100644
--- a/backend/src/main/java/io/f1/backend/domain/game/dto/response/RoomSettingResponse.java
+++ b/backend/src/main/java/io/f1/backend/domain/game/dto/response/RoomSettingResponse.java
@@ -1,3 +1,4 @@
 package io.f1.backend.domain.game.dto.response;
 
-public record RoomSettingResponse(String roomName, int maxUserCount, int currentUserCount) {}
+public record RoomSettingResponse(
+        String roomName, int maxUserCount, int currentUserCount, boolean locked) {}
diff --git a/backend/src/main/java/io/f1/backend/domain/game/mapper/RoomMapper.java b/backend/src/main/java/io/f1/backend/domain/game/mapper/RoomMapper.java
index 3ec0bbc9..b542a9e1 100644
--- a/backend/src/main/java/io/f1/backend/domain/game/mapper/RoomMapper.java
+++ b/backend/src/main/java/io/f1/backend/domain/game/mapper/RoomMapper.java
@@ -44,7 +44,8 @@ public static RoomSettingResponse toRoomSettingResponse(Room room) {
         return new RoomSettingResponse(
                 room.getRoomSetting().roomName(),
                 room.getRoomSetting().maxUserCount(),
-                room.getPlayerSessionMap().size());
+                room.getPlayerSessionMap().size(),
+                room.getRoomSetting().locked());
     }
 
     public static GameSettingResponse toGameSettingResponse(GameSetting gameSetting, Quiz quiz) {