diff --git a/debian/changelog b/debian/changelog
index 8a72289..7381de5 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+spark-store (3.2.3) stable; urgency=medium
+
+  * 客户端异常退出时仍然占用资源问题修复
+  * 降低dtk依赖版本，Debian 11 stable可直接安装
+
+-- shenmo <shenmo@spark-app.store>  Fri, 30 Jan 2022 00:00:00 +0800
+
 spark-store (3.2.2) stable; urgency=medium
 
   * aptss will now refresh the system source before doing install,  policy....etc
diff --git a/debian/control b/debian/control
index b5f8340..3917216 100644
--- a/debian/control
+++ b/debian/control
@@ -11,9 +11,9 @@ Build-Depends:
  libqt5widgets5,
  libqt5network5,
  libqt5concurrent5,
- libdtkcore-dev(>=5.2),
- libdtkgui-dev(>=5.2),
- libdtkwidget-dev(>=5.2),
+ libdtkcore-dev(>=5.0),
+ libdtkgui-dev(>=5.0),
+ libdtkwidget-dev(>=5.0),
  qttools5-private-dev,
  libnotify-dev,
  qtwebengine5-dev
diff --git a/src/main.cpp b/src/main.cpp
index 5aacfdb..bb74f29 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -34,7 +34,7 @@ int main(int argc, char *argv[])
      DAboutDialog dialog;
       a.setAboutDialog(&dialog);
       dialog.setLicense(QObject::tr("We publish this program under GPL V3"));
-      dialog.setVersion(DApplication::buildVersion("Version 3.2.2"));
+      dialog.setVersion(DApplication::buildVersion("Version 3.2.3"));
       dialog.setProductIcon(QIcon::fromTheme("spark-store"));  // 设置Logo
       dialog.setProductName(QLabel::tr("Spark Store"));
       dialog.setDescription(
@@ -55,7 +55,7 @@ int main(int argc, char *argv[])
     a.setOrganizationName("spark-union");
     a.setOrganizationDomain("https://www.deepinos.org/");
     a.setApplicationName("Spark Store");    //不需要翻译，否则 ~/.local/share/ 下文件夹名称也被翻译为中文
-    a.setApplicationVersion(DApplication::buildVersion("3.2.2"));
+    a.setApplicationVersion(DApplication::buildVersion("3.2.3"));
     a.setApplicationAcknowledgementPage("https://gitee.com/deepin-community-store/spark-store");
     a.setApplicationDescription(
                 QObject::tr(
diff --git a/src/widget.cpp b/src/widget.cpp
index f0bb212..8e7d2eb 100644
--- a/src/widget.cpp
+++ b/src/widget.cpp
@@ -18,6 +18,7 @@
 #include <QSettings>
 #include <QGraphicsOpacityEffect>
 #include <QtConcurrent> // 并发
+#include <QCloseEvent>  // close event
 
 #include <DApplication>
 #include <DGuiApplicationHelper>
@@ -572,14 +573,14 @@ void Widget::chooseLeftMenu(int index)
 
     updateUI();
 
-    if(index <= 12)
+    if (index <= 12)
     {
-        if(themeIsDark)
+        if (themeIsDark)
         {
             QString darkurl = menuUrl[index].toString();
             QStringList list = darkurl.split("/");
             darkurl.clear();
-            for(int i = 0; i < list.size() - 1; i++)
+            for (int i = 0; i < list.size() - 1; i++)
             {
                 darkurl += list[i] + "/";
             }
@@ -687,22 +688,18 @@ void Widget::searchApp(QString text)
     }
     else
     {
-        // sendNotification(tr("Spark store could only process spk:// links for now. The search feature is coming soon!"));
-        // ui->webView->setUrl(QUrl("http://www.baidu.com/s?wd="+text));    // 这东西对接百度
-        // ui->stackedWidget->setCurrentIndex(0);
-
         // 禁止同时进行多次搜索
-        if(!mutex.tryLock())
+        if (!mutex.tryLock())
         {
             return;
         }
 
         // 关键字搜索处理
         httpClient->get("https://search.deepinos.org.cn/appinfo/search")
-                .header("content-type", "application/json")
-                .queryParam("keyword", text)
-                .onResponse([this](QByteArray result)
-        {
+            .header("content-type", "application/json")
+            .queryParam("keyword", text)
+            .onResponse([this](QByteArray result)
+                        {
             auto json = QJsonDocument::fromJson(result).array();
             if (json.empty())
             {
@@ -711,20 +708,24 @@ void Widget::searchApp(QString text)
                 mutex.unlock();
                 return;
             }
-            displaySearchApp(json);
-        })
-        .onError([this](QString errorStr)
-        {
+            displaySearchApp(json); })
+            .onError([this](QString errorStr)
+                     {
             qDebug()  << "请求出错：" << errorStr;
             sendNotification(QString(tr("Request Error: %1")).arg(errorStr));
             mutex.unlock();
-            return;
-        })
-        .timeout(10 * 1000)
-                .exec();
+            return; })
+            .timeout(10 * 1000)
+            .exec();
     }
 }
 
+void Widget::closeEvent(QCloseEvent *event)
+{
+    mutex.unlock();
+    httpClient->deleteLater();
+}
+
 /**
  * @brief 展示搜索的APP信息
  */
diff --git a/src/widget.h b/src/widget.h
index f9faad9..9ec716e 100644
--- a/src/widget.h
+++ b/src/widget.h
@@ -128,6 +128,7 @@ private:
     void setfoot(int);
     void updatefoot();
     void updateUI();
+    void closeEvent(QCloseEvent *event);
 
     quint64 dirFileSize(const QString &path);