diff --git a/debian/changelog b/debian/changelog
index 3ea7fb4..206f9c2 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,6 +1,7 @@
-spark-store (4.3.2.2) UNRELEASED; urgency=medium
+spark-store (4.3.3) UNRELEASED; urgency=medium
 
   * 修复点击更新需要输入密码的问题
+  * 修复安装速度下降的问题
 
  -- shenmo <shenmo@spark-app.store>  Tue, 24 Sep 2024 11:27:08 +0800
 
diff --git a/tool/ssaudit b/tool/ssaudit
index 634cb7b..37ee792 100755
--- a/tool/ssaudit
+++ b/tool/ssaudit
@@ -123,7 +123,7 @@ DEBPATH=$(realpath "$1")
         exit "$try_run_ret"
     fi
 
-    aptss install "$DEBPATH" -yf --reinstall
+    dpkg -i "$DEBPATH" || aptss install "$DEBPATH" -yf --reinstall --allow-downgrades
 
     if [ "$?" = "0" ] && [ "$2" = "--delete-after-install" ]; then
         if dpkg -s "$package_name" >/dev/null 2>&1; then
diff --git a/tool/ssinstall b/tool/ssinstall
index 2f1fcb3..9ea6120 100755
--- a/tool/ssinstall
+++ b/tool/ssinstall
@@ -166,7 +166,7 @@ if [ ! -z "$IS_SHA512SUM_CHECKED" ]; then
         exit "$try_run_ret"
     fi
 
-    aptss install "$DEBPATH" -yf --reinstall
+    dpkg -i "$DEBPATH" || aptss install "$DEBPATH" -yf --reinstall --allow-downgrades
 
 unlock_file "$DEBPATH"