diff --git a/src/main/java/leets/weeth/domain/board/application/dto/PostDTO.java b/src/main/java/leets/weeth/domain/board/application/dto/PostDTO.java
index 0ca4b5e2..918c21a3 100644
--- a/src/main/java/leets/weeth/domain/board/application/dto/PostDTO.java
+++ b/src/main/java/leets/weeth/domain/board/application/dto/PostDTO.java
@@ -24,7 +24,7 @@ public record Save(
     public record Update(
             @NotNull String title,
             @NotNull String content,
-            @Valid List<@NotNull FileUpdateRequest> files
+            @Valid List<@NotNull FileSaveRequest> files
     ){}
 
     @Builder
diff --git a/src/main/java/leets/weeth/domain/board/application/usecase/PostUseCaseImpl.java b/src/main/java/leets/weeth/domain/board/application/usecase/PostUseCaseImpl.java
index 0da7dc3f..552d69f7 100644
--- a/src/main/java/leets/weeth/domain/board/application/usecase/PostUseCaseImpl.java
+++ b/src/main/java/leets/weeth/domain/board/application/usecase/PostUseCaseImpl.java
@@ -98,8 +98,10 @@ public void update(Long postId, PostDTO.Update dto, Long userId) {
         Post post = validateOwner(postId, userId);
 
         List<File> fileList = getFiles(postId);
+        fileDeleteService.delete(fileList);
 
-        fileUpdateService.updateFiles(fileList, dto.files());
+        List<File> files = fileMapper.toFileList(dto.files(), post);
+        fileSaveService.save(files);
 
         postUpdateService.update(post, dto);
     }