diff --git a/debian/changelog b/debian/changelog
index df8d66d..04bf141 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+spark-store (4.2.1) stable; urgency=medium
+
+  * 调整：支持在安装前进行测试（ss-do-upgrade-worker）
+  * 修复： 因依赖不完全导致在LinuxMint下无法下载统计
+
+ --shenmo <shenmo@spark-app.store>  Fri, 30 Jan 2022 00:00:00 +0800
+
 spark-store (4.2) stable; urgency=medium
 
   * 调整：UOS开发者模式提示现在不会那么挤了
diff --git a/src/main.cpp b/src/main.cpp
index 8cc8ba3..c52ffab 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -15,7 +15,7 @@ DWIDGET_USE_NAMESPACE
 int main(int argc, char *argv[])
 {
     // Get build time
-    static const QString version = "4.2";
+    static const QString version = "4.2.1";
     static const QDate buildDate = QLocale(QLocale::English).toDate(QString(__DATE__).replace("  ", " 0"), "MMM dd yyyy");
     static const QTime buildTime = QTime::fromString(__TIME__, "hh:mm:ss");
     static const QString buildDateTime = buildDate.toString("yyyy.MM.dd") + "-" + buildTime.toString("hh:mm:ss");
diff --git a/tool/update-upgrade/ss-do-upgrade-worker.sh b/tool/update-upgrade/ss-do-upgrade-worker.sh
index 04c082c..d6cf44e 100755
--- a/tool/update-upgrade/ss-do-upgrade-worker.sh
+++ b/tool/update-upgrade/ss-do-upgrade-worker.sh
@@ -32,6 +32,21 @@ case $1 in
 		IS_UPGRADE_ERROR=`cat /tmp/spark-store-app-upgrade-log.txt | grep "Package manager quit with exit code."`
 		echo "$IS_UPGRADE_ERROR" > /tmp/spark-store-app-upgrade-status.txt
 	;;
+	test-install-app)
+		try_run_output=$(aptss --dry-run install $@)
+		try_run_ret="$?"
+
+  if [ "$try_run_ret" -ne 0 ]
+  then
+    echo "Package manager quit with exit code.Here is the log" 
+    echo "包管理器以错误代码退出.日志如下" 
+    echo
+    echo -e "${try_run_output}"
+    exit "$try_run_ret"
+  fi
+
+	exit 0
+	;;
 	
 	clean-log)
 		rm -f /tmp/spark-store-app-ssupdate-status.txt /tmp/spark-store-app-ssupdate-log.txt /tmp/spark-store-app-upgrade-log.txt /tmp/spark-store-app-upgrade-status.txt