diff --git a/AGENTS.md b/AGENTS.md
index fd35c7c..c5fdfd9 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -2,7 +2,7 @@
 
 ## 项目范围
 
-MeloASR 是仅面向 Linux 的 Fcitx5 桌面语音输入工具。项目名为 `MeloASR`，分发包名为 `meloasr`，当前版本为 `0.1.10`。
+MeloASR 是仅面向 Linux 的 Fcitx5 桌面语音输入工具。项目名为 `MeloASR`，分发包名为 `meloasr`，当前版本为 `0.1.11`。
 
 不得恢复 Windows、PowerShell 或 Tauri 输出路径。发行版差异只能存在于依赖说明和打包配置，不能进入语音输入核心逻辑。
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1e33976..a57709c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 本项目遵循 [Keep a Changelog](https://keepachangelog.com/zh-CN/1.1.0/) 的格式。
 
+## [0.1.11] - 2026-08-23
+
+### 变更
+
+- 切换后端时销毁非当前后端的网页窗口，保留登录会话但不再保活其 renderer。
+
 ## [0.1.10] - 2026-08-23
 
 ### 修复
diff --git a/CLAUDE.md b/CLAUDE.md
index fd35c7c..c5fdfd9 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -2,7 +2,7 @@
 
 ## 项目范围
 
-MeloASR 是仅面向 Linux 的 Fcitx5 桌面语音输入工具。项目名为 `MeloASR`，分发包名为 `meloasr`，当前版本为 `0.1.10`。
+MeloASR 是仅面向 Linux 的 Fcitx5 桌面语音输入工具。项目名为 `MeloASR`，分发包名为 `meloasr`，当前版本为 `0.1.11`。
 
 不得恢复 Windows、PowerShell 或 Tauri 输出路径。发行版差异只能存在于依赖说明和打包配置，不能进入语音输入核心逻辑。
 
diff --git a/linux/fcitx5/CMakeLists.txt b/linux/fcitx5/CMakeLists.txt
index f6c360f..7d30404 100644
--- a/linux/fcitx5/CMakeLists.txt
+++ b/linux/fcitx5/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.16)
 
-project(meloasr-fcitx5 VERSION 0.1.10 LANGUAGES CXX)
+project(meloasr-fcitx5 VERSION 0.1.11 LANGUAGES CXX)
 
 include(GNUInstallDirs)
 include(CTest)
diff --git a/linux/fcitx5/meloasr.conf.in b/linux/fcitx5/meloasr.conf.in
index f902ab6..ee1bb91 100644
--- a/linux/fcitx5/meloasr.conf.in
+++ b/linux/fcitx5/meloasr.conf.in
@@ -6,7 +6,7 @@ Comment[zh_CN]=将 MeloASR 网页后端连接到当前输入上下文
 Type=SharedLibrary
 Library=@MELOASR_LIBRARY_PATH@
 Category=Module
-Version=0.1.10
+Version=0.1.11
 OnDemand=False
 Configurable=False
 
diff --git a/package-lock.json b/package-lock.json
index 4f42bcc..8c16b58 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "meloasr",
-  "version": "0.1.10",
+  "version": "0.1.11",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "meloasr",
-      "version": "0.1.10",
+      "version": "0.1.11",
       "devDependencies": {
         "@types/node": "^24.0.0",
         "electron": "42.3.0",
diff --git a/package.json b/package.json
index 0b843ab..bb795c2 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "meloasr",
   "productName": "MeloASR",
-  "version": "0.1.10",
+  "version": "0.1.11",
   "private": true,
   "author": "MeloASR contributors",
   "description": "基于网页语音识别后端和 Fcitx5 的 Linux 实时语音输入工具",
diff --git a/packaging/README.md b/packaging/README.md
index f3176c0..968dcb1 100644
--- a/packaging/README.md
+++ b/packaging/README.md
@@ -1,6 +1,6 @@
 # Linux 分发打包
 
-MeloASR 0.1.10 的系统包由两部分组成：
+MeloASR 0.1.11 的系统包由两部分组成：
 
 - Electron 应用安装到 `/opt/meloasr`，命令入口为 `/usr/bin/meloasr`；
 - Fcitx5 常驻 addon 由目标发行版中的 CMake/Fcitx5 开发包编译，并安装到该环境报告的 addon 目录。
@@ -40,7 +40,7 @@ npm run build:linux:dir
 packaging/deb/build-deb.sh
 ```
 
-产物位于 `packaging/out/meloasr_0.1.10_<arch>.deb`。依赖名称按 Debian/Ubuntu 系列填写，但尚未在各发行版完成安装验证。
+产物位于 `packaging/out/meloasr_0.1.11_<arch>.deb`。依赖名称按 Debian/Ubuntu 系列填写，但尚未在各发行版完成安装验证。
 
 ## rpm
 
diff --git a/packaging/arch/PKGBUILD b/packaging/arch/PKGBUILD
index 07a05ae..9ccc3d9 100644
--- a/packaging/arch/PKGBUILD
+++ b/packaging/arch/PKGBUILD
@@ -1,5 +1,5 @@
 pkgname=meloasr
-pkgver=0.1.10
+pkgver=0.1.11
 pkgrel=1
 pkgdesc='Web-backed voice input for Fcitx5'
 arch=('x86_64')
diff --git a/packaging/arch/README.md b/packaging/arch/README.md
index 0c9213e..6028f60 100644
--- a/packaging/arch/README.md
+++ b/packaging/arch/README.md
@@ -1,6 +1,6 @@
 # Arch Linux 构建
 
-发布时把项目源码归档为 `meloasr-0.1.10.tar.gz`，与 `PKGBUILD` 放在同一目录，随后运行：
+发布时把项目源码归档为 `meloasr-0.1.11.tar.gz`，与 `PKGBUILD` 放在同一目录，随后运行：
 
 ```bash
 makepkg --syncdeps --cleanbuild
diff --git a/packaging/assets/meloasr.metainfo.xml b/packaging/assets/meloasr.metainfo.xml
index ad6258e..551f1b8 100644
--- a/packaging/assets/meloasr.metainfo.xml
+++ b/packaging/assets/meloasr.metainfo.xml
@@ -16,6 +16,7 @@
     <binary>meloasr</binary>
   </provides>
   <releases>
+    <release version="0.1.11" date="2026-08-23"/>
     <release version="0.1.10" date="2026-08-23"/>
     <release version="0.1.9" date="2026-08-23"/>
     <release version="0.1.8" date="2026-08-23"/>
diff --git a/packaging/deb/build-deb.sh b/packaging/deb/build-deb.sh
index 02ee321..6af27db 100755
--- a/packaging/deb/build-deb.sh
+++ b/packaging/deb/build-deb.sh
@@ -2,7 +2,7 @@
 set -euo pipefail
 
 project_dir="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/../.." && pwd)"
-version="${MELOASR_VERSION:-0.1.10}"
+version="${MELOASR_VERSION:-0.1.11}"
 arch="${MELOASR_DEB_ARCH:-$(dpkg --print-architecture)}"
 app_dir="${1:-${MELOASR_ELECTRON_APP_DIR:-${project_dir}/release/linux-unpacked}}"
 work_dir="${project_dir}/packaging/out/deb-root"
diff --git a/packaging/rpm/build-rpm.sh b/packaging/rpm/build-rpm.sh
index 18d4f13..cc2f2c9 100755
--- a/packaging/rpm/build-rpm.sh
+++ b/packaging/rpm/build-rpm.sh
@@ -2,7 +2,7 @@
 set -euo pipefail
 
 project_dir="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/../.." && pwd)"
-version="${MELOASR_VERSION:-0.1.10}"
+version="${MELOASR_VERSION:-0.1.11}"
 app_dir="${1:-${MELOASR_ELECTRON_APP_DIR:-${project_dir}/release/linux-unpacked}}"
 stage_dir="${project_dir}/packaging/out/rpm-root"
 top_dir="${project_dir}/packaging/out/rpmbuild"
diff --git a/packaging/rpm/meloasr-binary.spec b/packaging/rpm/meloasr-binary.spec
index a9ec946..eccaea8 100644
--- a/packaging/rpm/meloasr-binary.spec
+++ b/packaging/rpm/meloasr-binary.spec
@@ -36,6 +36,9 @@ tar -C %{buildroot} -xzf %{SOURCE0}
 /etc/xdg/autostart/meloasr.desktop
 
 %changelog
+* Sun Aug 23 2026 MeloASR contributors - 0.1.11-1
+- Release only the selected speech backend renderer.
+
 * Sun Aug 23 2026 MeloASR contributors - 0.1.10-1
 - Restore the Nix npm configuration hook before building the application.
 
diff --git a/src/main/backend-manager.ts b/src/main/backend-manager.ts
index eb73fdd..60f56de 100644
--- a/src/main/backend-manager.ts
+++ b/src/main/backend-manager.ts
@@ -12,6 +12,7 @@ interface BackendRecord {
   page: BrowserWindow;
   windows: Set<BrowserWindow>;
   exposed: boolean;
+  disposed: boolean;
   status: BackendRuntimeStatus;
 }
 
@@ -72,6 +73,7 @@ export class BackendManager extends EventEmitter {
       page: root,
       windows: new Set([root]),
       exposed: false,
+      disposed: false,
       status: loadingStatus(definition)
     };
     this.records.set(id, record);
@@ -89,7 +91,12 @@ export class BackendManager extends EventEmitter {
 
   async select(id: string): Promise<void> {
     requireBackend(id);
-    this.hideRecord(this.records.get(this.settings.get().backendId));
+    const previousId = this.settings.get().backendId;
+    if (previousId === id) {
+      await this.ensure(id);
+      return;
+    }
+    this.disposeRecord(previousId);
     this.settings.update({ backendId: id });
     await this.ensure(id);
     this.emit('active-changed', id);
@@ -200,7 +207,7 @@ export class BackendManager extends EventEmitter {
 
   private registerWindow(window: BrowserWindow, record: BackendRecord): void {
     window.on('close', (event) => {
-      if ((app as typeof app & { isQuitting?: boolean }).isQuitting) return;
+      if (record.disposed || (app as typeof app & { isQuitting?: boolean }).isQuitting) return;
       event.preventDefault();
       this.hideRecord(record);
     });
@@ -209,6 +216,10 @@ export class BackendManager extends EventEmitter {
       overrideBrowserWindowOptions: { show: record.exposed, skipTaskbar: !record.exposed, focusable: true }
     }));
     window.webContents.on('did-create-window', (child) => {
+      if (record.disposed) {
+        child.destroy();
+        return;
+      }
       record.windows.add(child);
       child.on('closed', () => record.windows.delete(child));
       this.registerWindow(child, record);
@@ -241,6 +252,17 @@ export class BackendManager extends EventEmitter {
     for (const window of record.windows) this.parkWindow(window);
   }
 
+  private disposeRecord(id: string): void {
+    const record = this.records.get(id);
+    if (!record) return;
+    record.disposed = true;
+    this.records.delete(id);
+    for (const window of [...record.windows]) {
+      if (!window.isDestroyed()) window.destroy();
+    }
+    record.windows.clear();
+  }
+
   private parkWindow(window: BrowserWindow): void {
     if (window.isDestroyed()) return;
     window.hide();