diff --git a/backend/SystemUpdater/Core/Database.py b/backend/SystemUpdater/Core/Database.py
index 6792fc8..f327da0 100644
--- a/backend/SystemUpdater/Core/Database.py
+++ b/backend/SystemUpdater/Core/Database.py
@@ -159,6 +159,7 @@ class Sqlite3Server(object):
 
         # 判断更新方式
         if mode == MODE_UPGRADE_PARTIAL: # 部分更新
+            pkg_adj = ""
             # 判断更新包为单包或更新组
             if pkg_group:
             # 更新组
@@ -170,20 +171,30 @@ class Sqlite3Server(object):
                 for adj in adjust_pkg:
                     if pkgname in adj:
                     # 该部分升级的单包为调整版本，与候选版本不一致
-                        pkgname = adj
+                        pkg_adj = adj
                         break
-                try:
-                    pkg =  self.window_main.cache[pkgname.split("=")[0]]
-                    for ver in pkg.versions:
-                        if ver.version == pkgname.split("=")[1]:
-                            pkg_inst_ver = ver
-                            break
-                    pkgname = pkgname.split("=")[0]
-                except Exception as e:
-                    logging.error(_("%s could not be detected in the source because the source was changed or for other reasons."), \
+                if pkg_adj: # 有调整的情况
+                    try:
+                        pkg =  self.window_main.cache[pkg_adj.split("=")[0]]
+                        for ver in pkg.versions:
+                            if ver.version == pkg_adj.split("=")[1]:
+                                pkg_inst_ver = ver
+                                break
+                        pkgname = pkg_adj.split("=")[0]
+                        pkgversion = str(pkg_inst_ver.source_version)
+                        pkgdescription = str(pkg_inst_ver.description)
+                    except Exception as e:
+                        logging.error(_("%s could not be detected in the source because the source was changed or for other reasons."), \
                             str(pkgname))
-                pkgversion = str(pkg_inst_ver.source_version)
-                pkgdescription = str(pkg_inst_ver.description)
+                        logging.error(str(e))
+                else: # 没有调整的情况
+                    try:
+                        pkg =  self.window_main.cache[pkgname]
+                        pkgversion = str(pkg.candidate.version)
+                        pkgdescription = str(pkg.candidate.raw_description)
+                    except Exception as e:
+                        logging.error(str(e))
+                
             try:
                 self.insert_into_updateinfo(pkgname, pkgversion, pkgdescription, timestr, status, "1", errstr)
                 # FIXME: 发送插入数据库成功的信号local_upgrade_list
diff --git a/backend/SystemUpdater/Core/filter.py b/backend/SystemUpdater/Core/filter.py
index b024d1e..e0fc0ae 100644
--- a/backend/SystemUpdater/Core/filter.py
+++ b/backend/SystemUpdater/Core/filter.py
@@ -142,9 +142,9 @@ class UpdateListFilterCache(apt.Cache):
                 else:                   # 判断升级列表
                     for nv in new_ver:
                         if nv > pkg.installed and nv != pkg.candidate:
-                            logging.info("adjusting candidate version: %s" % new_ver)
+                            logging.info("adjusting candidate version: %s" % nv)
                             if _is_adjust == True:
-                                pkg.candidate = new_ver
+                                pkg.candidate = nv
                             adjust_candidate_pkgs.append(pkg.name+"="+pkg.candidate.version)
                             break
                         elif nv > pkg.installed and nv == pkg.candidate:
diff --git a/backend/interface.md b/backend/interface.md
index d11de33..de43e3c 100755
--- a/backend/interface.md
+++ b/backend/interface.md
@@ -21,18 +21,22 @@
 
 ### 方法列表
 
-| Method Name        | Input Args | Output Args | means                             |
-| ------------------ | ---------- | ----------- | --------------------------------- |
-| UpdateDetect       | 无         | b           | 更新cache，产生组升级列表JSON文件 |
-| DistUpgradeAll  | b         | b           | 全部升级                          |
-| DistUpgradePartial | b,as         | b           | 部分升级                          |
-| DistUpgradeSystem  | b         | b           | 全盘升级                          |
-| CancelDownload     | 无         | b           | 取消升级                          |
-| InsertInstallState    | ss         | b           | 向display表插入数据                          |
-| GtDownloadspeedLimitValue | 无     | b           | 获取当前限速                          |
-| SetDownloadspeedMax     | sb         | b          | 设置限速                      |
-| GetBackendStatus | 无 | i | 控制获取后端状态 |
-| UnattendedUpgradeValue | ss  | bs   | 获取是否允许关机前更新   |
+| Method Name        | Input Args | Output Args | means                             | 异步任务 |
+| ------------------ | ---------- | ----------- | --------------------------------- | ------------------ |
+| UpdateDetect       | 无         | b           | 更新cache，产生组升级列表JSON文件 |  |
+| DistUpgradeAll  | b         | b           | 全部升级                          |  |
+| DistUpgradePartial | b,as         | b           | 部分升级                          |  |
+| DistUpgradeSystem  | b         | b           | 全盘升级                          |  |
+| CancelDownload     | 无         | b           | 取消升级                          |  |
+| InsertInstallState    | ss         | b           | 向display表插入数据                          |  |
+| GtDownloadspeedLimitValue | 无     | b           | 获取当前限速                          |  |
+| SetDownloadspeedMax     | sb         | b          | 设置限速                      |  |
+| GetBackendStatus | 无 | i | 控制获取后端状态 |  |
+| UnattendedUpgradeValue | ss  | bs   | 获取是否允许关机前更新   |  |
+| PurgePackages | as | bs | 卸载软件包 | 支持 |
+|  |  |  |  |  |
+|  |  |  |  |  |
+|  |  |  |  |  |
 #### Method分析
 
 #### UpdateDetect
diff --git a/debian/changelog b/debian/changelog
index 1177cf1..46e694e 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,13 @@
+kylin-system-updater (1.2.7.3kord) v101; urgency=medium
+  
+  * BUG: bug#91191
+  * 需求号: 9002
+  * 需求:1.升级依赖修复机制，减小第三方软件对系统更新的影响；2.更新源锁定功能，屏蔽第三方软件源对系统更新的影响
+  * 其他改动说明:system-updater.conf文件配置;fix升级版本号记录不正确;
+  * 影响域: 系统升级
+
+ -- luoxueyi <luoxueyi@kylinos.cn>  Tue, 16 Nov 2021 14:53:24 +0800
+
 kylin-system-updater (1.2.7.2kord) v101; urgency=medium
   
   * BUG: