diff --git a/apps/emqx_exproto/src/emqx_exproto.appup.src b/apps/emqx_exproto/src/emqx_exproto.appup.src
index 590a2106f..e66e8a58c 100644
--- a/apps/emqx_exproto/src/emqx_exproto.appup.src
+++ b/apps/emqx_exproto/src/emqx_exproto.appup.src
@@ -1,18 +1,22 @@
 %% -*- mode: erlang -*-
 {VSN,
-  [{<<"4\\.3\\.[2-5]">>,
+  [{<<"4\\.3\\.[4-5]">>,
+    [{load_module,emqx_exproto_channel,brutal_purge,soft_purge,[]}]},
+   {<<"4\\.3\\.[2-3]">>,
     [{load_module,emqx_exproto_conn,brutal_purge,soft_purge,[]},
      {load_module,emqx_exproto_channel,brutal_purge,soft_purge,[]}]},
-   {<<"4.3.[0-1]">>,
+   {<<"4\\.3\\.[0-1]">>,
     [{load_module,emqx_exproto_gsvr,brutal_purge,soft_purge,[]},
      {load_module,emqx_exproto_gcli,brutal_purge,soft_purge,[]},
      {load_module,emqx_exproto_conn,brutal_purge,soft_purge,[]},
      {load_module,emqx_exproto_channel,brutal_purge,soft_purge,[]}]},
    {<<".*">>,[]}],
-  [{<<"4\\.3\\.[2-5]">>,
+  [{<<"4\\.3\\.[4-5]">>,
+    [{load_module,emqx_exproto_channel,brutal_purge,soft_purge,[]}]},
+   {<<"4\\.3\\.[2-3]">>,
     [{load_module,emqx_exproto_conn,brutal_purge,soft_purge,[]},
      {load_module,emqx_exproto_channel,brutal_purge,soft_purge,[]}]},
-   {<<"4.3.[0-1]">>,
+   {<<"4\\.3\\.[0-1]">>,
     [{load_module,emqx_exproto_gsvr,brutal_purge,soft_purge,[]},
      {load_module,emqx_exproto_gcli,brutal_purge,soft_purge,[]},
      {load_module,emqx_exproto_conn,brutal_purge,soft_purge,[]},