diff --git a/apps/emqx/include/emqx_release.hrl b/apps/emqx/include/emqx_release.hrl
index 056e505cb..dd09309c2 100644
--- a/apps/emqx/include/emqx_release.hrl
+++ b/apps/emqx/include/emqx_release.hrl
@@ -32,7 +32,7 @@
 %% `apps/emqx/src/bpapi/README.md'
 
 %% Opensource edition
--define(EMQX_RELEASE_CE, "5.6.0-alpha.2").
+-define(EMQX_RELEASE_CE, "5.6.0-rc.1").
 
 %% Enterprise edition
--define(EMQX_RELEASE_EE, "5.6.0-alpha.2").
+-define(EMQX_RELEASE_EE, "5.6.0-rc.1").
diff --git a/apps/emqx/src/emqx_persistent_message.erl b/apps/emqx/src/emqx_persistent_message.erl
index 61a1568ba..36ad8a3df 100644
--- a/apps/emqx/src/emqx_persistent_message.erl
+++ b/apps/emqx/src/emqx_persistent_message.erl
@@ -73,7 +73,7 @@ storage_backend(Path) ->
 
 -spec add_handler() -> ok.
 add_handler() ->
-    emqx_conf:add_handler([session_persistence], ?MODULE).
+    emqx_config_handler:add_handler([session_persistence], ?MODULE).
 
 pre_config_update([session_persistence], #{<<"enable">> := New}, #{<<"enable">> := Old}) when
     New =/= Old
diff --git a/deploy/charts/emqx-enterprise/Chart.yaml b/deploy/charts/emqx-enterprise/Chart.yaml
index 292495754..a3b9407ca 100644
--- a/deploy/charts/emqx-enterprise/Chart.yaml
+++ b/deploy/charts/emqx-enterprise/Chart.yaml
@@ -14,8 +14,8 @@ type: application
 
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
-version: 5.6.0-alpha.2
+version: 5.6.0-rc.1
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application.
-appVersion: 5.6.0-alpha.2
+appVersion: 5.6.0-rc.1
diff --git a/deploy/charts/emqx/Chart.yaml b/deploy/charts/emqx/Chart.yaml
index cb53f8105..096ef14a1 100644
--- a/deploy/charts/emqx/Chart.yaml
+++ b/deploy/charts/emqx/Chart.yaml
@@ -14,8 +14,8 @@ type: application
 
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
-version: 5.6.0-alpha.2
+version: 5.6.0-rc.1
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application.
-appVersion: 5.6.0-alpha.2
+appVersion: 5.6.0-rc.1