diff --git a/src/emqx.appup.src b/src/emqx.appup.src
index ae5c1e481..b9805abdb 100644
--- a/src/emqx.appup.src
+++ b/src/emqx.appup.src
@@ -120,8 +120,9 @@
      {load_module,emqx_alarm_handler,brutal_purge,soft_purge,[]},
      {load_module,emqx_misc,brutal_purge,soft_purge,[]}
    ]},
-   {<<"4.2.6">>, [
-     {load_module, emqx_channel, brutal_purge, soft_purge, []}
+   {<<"4.2.8">>, [
+     {load_module, emqx_channel, brutal_purge, soft_purge, []},
+     {load_module, emqx_connection, brutal_purge, soft_purge, []}
    ]},
    {<<".*">>, []}
  ],
@@ -244,8 +245,9 @@
      {load_module,emqx_alarm_handler,brutal_purge,soft_purge,[]},
      {load_module,emqx_misc,brutal_purge,soft_purge,[]}
    ]},
-   {<<"4.2.6">>, [
-     {load_module, emqx_channel, brutal_purge, soft_purge, []}
+   {<<"4.2.8">>, [
+     {load_module, emqx_channel, brutal_purge, soft_purge, []},
+     {load_module, emqx_connection, brutal_purge, soft_purge, []}
    ]},
    {<<".*">>, []}
  ]