diff --git a/manifest.json b/manifest.json
index ff2439a..44cbcf2 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,8 +1,8 @@
 {
   "id": "sonicnote-sync",
   "name": "SonicNote Sync",
-  "version": "1.1.8",
-  "minAppVersion": "0.15.0",
+  "version": "1.1.9",
+  "minAppVersion": "1.6.0",
   "description": "Sync recordings from SonicNote as Markdown files with transcripts, AI summaries, and study reports.",
   "author": "EasyLinkIn",
   "isDesktopOnly": false
diff --git a/package.json b/package.json
index 3caca9c..df2536b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sonicnote-sync",
-  "version": "1.1.8",
+  "version": "1.1.9",
   "description": "Sync recordings from SonicNote to Obsidian as Markdown files",
   "main": "main.js",
   "scripts": {
diff --git a/src/api.ts b/src/api.ts
index a043c6a..af77c9d 100644
--- a/src/api.ts
+++ b/src/api.ts
@@ -46,7 +46,7 @@ export class SonicNoteApiClient {
 		} catch (e: unknown) {
 			const err = e as { json?: BackendResponse; message?: string };
 			if (err?.json) {
-				return err.json as BackendResponse;
+				return err.json;
 			}
 			console.error(`[SonicNote] 请求失败 ${method} ${path}:`, err?.message || e);
 			throw new Error(err?.message || `请求失败: ${method} ${path}`);
diff --git a/src/main.ts b/src/main.ts
index 547dc12..42909a8 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,9 +1,13 @@
-import { Notice, Plugin } from 'obsidian';
+import { App, Notice, Plugin } from 'obsidian';
 import { SonicNoteApiClient } from './api';
 import { SyncService } from './sync';
 import { SonicNoteSettingTab } from './settings';
 import { DEFAULT_SETTINGS, SonicNotePluginSettings } from './types';
 
+interface AppWithSetting extends App {
+	setting: { open: () => void; openTabById: (id: string) => void };
+}
+
 export default class SonicNoteSyncPlugin extends Plugin {
 	settings: SonicNotePluginSettings = DEFAULT_SETTINGS;
 	private api!: SonicNoteApiClient;
@@ -15,7 +19,6 @@ export default class SonicNoteSyncPlugin extends Plugin {
 	async onload() {
 		await this.loadSettings();
 
-		// Initialize API client and sync service
 		this.api = new SonicNoteApiClient(() => this.settings);
 		this.syncService = new SyncService(
 			this.app,
@@ -44,10 +47,9 @@ export default class SonicNoteSyncPlugin extends Plugin {
 			id: 'login',
 			name: '登录',
 			callback: () => {
-				// @ts-ignore - internal API to open settings
-				this.app.setting.open();
-				// @ts-ignore
-				this.app.setting.openTabById('sonicnote-sync');
+				const app = this.app as AppWithSetting;
+				app.setting.open();
+				app.setting.openTabById('sonicnote-sync');
 			},
 		});
 
@@ -89,7 +91,8 @@ export default class SonicNoteSyncPlugin extends Plugin {
 	}
 
 	async loadSettings() {
-		this.settings = Object.assign({}, DEFAULT_SETTINGS, await this.loadData());
+		const saved = await this.loadData() as Partial<SonicNotePluginSettings> | null;
+		this.settings = Object.assign({}, DEFAULT_SETTINGS, saved);
 	}
 
 	async saveSettings() {
diff --git a/src/settings.ts b/src/settings.ts
index e7a2081..b4195d2 100644
--- a/src/settings.ts
+++ b/src/settings.ts
@@ -26,7 +26,7 @@ export class SonicNoteSettingTab extends PluginSettingTab {
 		containerEl.empty();
 
 		new Setting(containerEl)
-			.setName('SonicNote Sync 设置')
+			.setName('设置')
 			.setHeading();
 
 		// Sync folder
diff --git a/versions.json b/versions.json
index 38cadcc..c14a7a6 100644
--- a/versions.json
+++ b/versions.json
@@ -4,5 +4,6 @@
   "1.1.2": "0.15.0",
   "1.1.3": "0.15.0",
   "1.1.4": "0.15.0",
-  "1.1.8": "0.15.0"
+  "1.1.8": "1.6.0",
+  "1.1.9": "1.6.0"
 }