diff --git a/apps/emqx/include/emqx_release.hrl b/apps/emqx/include/emqx_release.hrl
index 655cd77d9..3ec5ca6a5 100644
--- a/apps/emqx/include/emqx_release.hrl
+++ b/apps/emqx/include/emqx_release.hrl
@@ -32,10 +32,10 @@
 %% `apps/emqx/src/bpapi/README.md'
 
 %% Opensource edition
--define(EMQX_RELEASE_CE, "5.5.1-rc.3").
+-define(EMQX_RELEASE_CE, "5.5.1-rc.4").
 
 %% Enterprise edition
--define(EMQX_RELEASE_EE, "5.5.1-rc.3").
+-define(EMQX_RELEASE_EE, "5.5.1-rc.4").
 
 %% The HTTP API version
 -define(EMQX_API_VERSION, "5.0").
diff --git a/changes/e5.5.1.en.md b/changes/e5.5.1.en.md
index 8077160d2..3f9a50ebb 100644
--- a/changes/e5.5.1.en.md
+++ b/changes/e5.5.1.en.md
@@ -22,7 +22,7 @@
 
 - [#12606](https://github.com/emqx/emqx/pull/12606) The Prometheus API experienced crashes when the specified SSL certificate file did not exist in the given path. Now, when an SSL certificate file is missing, the `emqx_cert_expiry_at` metric will report a value of 0, indicating the non-existence of the certificate.
 
-- [#12620](https://github.com/emqx/emqx/pull/12620) Fixed an issue when sensitive headers for HTTP connector may be printed in the `debug` level log.
+- [#12620](https://github.com/emqx/emqx/pull/12620) Redacted sensitive information in HTTP headers to exclude authentication and authorization credentials from `debug` level logs in the HTTP Server connector, mitigating potential security risks.
 
 - [#12632](https://github.com/emqx/emqx/pull/12632) Fixed an issue where the rule engine's SQL built-in function `date_to_unix_ts` produced incorrect results for dates starting from March 1st on leap years.
 
diff --git a/changes/v5.5.1.en.md b/changes/v5.5.1.en.md
index d25349ccd..2555d0c36 100644
--- a/changes/v5.5.1.en.md
+++ b/changes/v5.5.1.en.md
@@ -18,7 +18,7 @@
 
 - [#12606](https://github.com/emqx/emqx/pull/12606) The Prometheus API experienced crashes when the specified SSL certificate file did not exist in the given path. Now, when an SSL certificate file is missing, the `emqx_cert_expiry_at` metric will report a value of 0, indicating the non-existence of the certificate.
 
-- [#12620](https://github.com/emqx/emqx/pull/12620) Fixed an issue when sensitive headers for HTTP connector may be printed in the `debug` level log.
+- [#12620](https://github.com/emqx/emqx/pull/12620) Redacted sensitive information in HTTP headers to exclude authentication and authorization credentials from `debug` level logs in the HTTP Server connector, mitigating potential security risks.
 
 - [#12632](https://github.com/emqx/emqx/pull/12632) Fixed an issue where the rule engine's SQL built-in function `date_to_unix_ts` produced incorrect results for dates starting from March 1st on leap years.
 
diff --git a/deploy/charts/emqx-enterprise/Chart.yaml b/deploy/charts/emqx-enterprise/Chart.yaml
index e75a8d346..054ca4c32 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: 5.5.1-rc.3
+version: 5.5.1-rc.4
 
 # 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: 5.5.1-rc.3
+appVersion: 5.5.1-rc.4
diff --git a/deploy/charts/emqx/Chart.yaml b/deploy/charts/emqx/Chart.yaml
index 7c33555f1..78e02af81 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: 5.5.1-rc.3
+version: 5.5.1-rc.4
 
 # 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: 5.5.1-rc.3
+appVersion: 5.5.1-rc.4