diff --git a/CHANGELOG.md b/CHANGELOG.md
index 88e8055daa..7fb7a37e22 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@
 - リバーシ機能が削除されました
   - 後日別リポジトリとして復活予定です
 - Chat UIが削除されました
+- ノートに添付できるファイルの数が16に増えました
 
 ### Improvements
 - カスタム絵文字一括編集機能
diff --git a/packages/backend/src/server/api/endpoints/notes/create.ts b/packages/backend/src/server/api/endpoints/notes/create.ts
index 6adbc821e7..4efa76b248 100644
--- a/packages/backend/src/server/api/endpoints/notes/create.ts
+++ b/packages/backend/src/server/api/endpoints/notes/create.ts
@@ -48,7 +48,7 @@ export const meta = {
 			validator: $.optional.nullable.str.pipe(text =>
 				text.trim() != ''
 					&& length(text.trim()) <= maxNoteTextLength
-					&& Array.from(text.trim()).length <= DB_MAX_NOTE_TEXT_LENGTH	// DB limit
+					&& Array.from(text.trim()).length <= DB_MAX_NOTE_TEXT_LENGTH,	// DB limit
 			),
 			default: null,
 		},
@@ -78,11 +78,11 @@ export const meta = {
 		},
 
 		fileIds: {
-			validator: $.optional.arr($.type(ID)).unique().range(1, 4),
+			validator: $.optional.arr($.type(ID)).unique().range(1, 16),
 		},
 
 		mediaIds: {
-			validator: $.optional.arr($.type(ID)).unique().range(1, 4),
+			validator: $.optional.arr($.type(ID)).unique().range(1, 16),
 			deprecated: true,
 		},
 
diff --git a/packages/client/src/components/post-form-attaches.vue b/packages/client/src/components/post-form-attaches.vue
index 0782ce22e5..591022c5f9 100644
--- a/packages/client/src/components/post-form-attaches.vue
+++ b/packages/client/src/components/post-form-attaches.vue
@@ -10,7 +10,7 @@
 			</div>
 		</template>
 	</XDraggable>
-	<p class="remain">{{ 4 - files.length }}/4</p>
+	<p class="remain">{{ 16 - files.length }}/16</p>
 </div>
 </template>
 
@@ -41,7 +41,6 @@ export default defineComponent({
 	data() {
 		return {
 			menu: null as Promise<null> | null,
-
 		};
 	},