diff --git a/apps/emqx/include/emqx_release.hrl b/apps/emqx/include/emqx_release.hrl
index c7fa97be7..d66c7982a 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, "5.1.5-build.3").
+-define(EMQX_RELEASE_CE, "5.1.6").
 
 %% Enterprise edition
 -define(EMQX_RELEASE_EE, "5.2.0-alpha.3").
diff --git a/changes/v5.1.6.en.md b/changes/v5.1.6.en.md
new file mode 100644
index 000000000..3c393c55b
--- /dev/null
+++ b/changes/v5.1.6.en.md
@@ -0,0 +1,30 @@
+# v5.1.6
+
+## Enhancements
+
+- [#11429](https://github.com/emqx/emqx/pull/11429) Added option to configure detection of legacy protocol in MondoDB connectors and bridges.
+
+- [#11436](https://github.com/emqx/emqx/pull/11436) Add a new API endpoint `DELETE  /banned` to clear all `banned` data.
+
+- [#11438](https://github.com/emqx/emqx/pull/11438) Changed the type of the `mqtt.mqx_packet_size` from string to byteSize to better represent the valid numeric range.
+  Strings will still be accepted for backwards compatibility.
+
+- [#11446](https://github.com/emqx/emqx/pull/11446) Refactored datetime-related modules and functions to simplify the code.
+
+- [#11396](https://github.com/emqx/emqx/pull/11396) Introduce topic index for the rule engine runtime that significantly improves the performance of EMQX with a non-trivial number of rules consuming messages matching different topic filters.
+
+## Bug Fixes
+
+- [#11424](https://github.com/emqx/emqx/pull/11424) Add a check for the maximum value of the timestamp in the API to ensure it is a valid Unix timestamp.
+
+- [#11445](https://github.com/emqx/emqx/pull/11445) Removed os_mon application monitor support on Windows platforms to prevent VM crashes.
+  Functionality remains on non-Windows platforms.
+
+- [#11454](https://github.com/emqx/emqx/pull/11454) Fixed crashing when debugging/tracing with large payloads(introduce when [#11279](https://github.com/emqx/emqx/pull/11279))
+
+- [#11456](https://github.com/emqx/emqx/pull/11456) Removed validation that enforced non-empty PEM for CA cert file.
+  CA certificate file PEM can now be empty.
+
+- [#11499](https://github.com/emqx/emqx/pull/11499) Upgrade Erlang/OTP to 25.3.2-2
+
+  Erlang/OTP 25.3.2-2 excludes sensitive data from mnesia_hook log message.
diff --git a/deploy/charts/emqx/Chart.yaml b/deploy/charts/emqx/Chart.yaml
index 1451347e2..f8cd69735 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: 5.1.5-build.3
+version: 5.1.6
 
 # 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: 5.1.5-build.3
+appVersion: 5.1.6
diff --git a/scripts/check_missing_reboot_apps.exs b/scripts/check_missing_reboot_apps.exs
index d9933e099..91d4b39ea 100755
--- a/scripts/check_missing_reboot_apps.exs
+++ b/scripts/check_missing_reboot_apps.exs
@@ -24,10 +24,10 @@ apps =
 
 :xref.start(:xref)
 :xref.set_default(:xref, warnings: false)
-rel_dir = '_build/#{profile}/lib/'
+rel_dir = ~c"_build/#{profile}/lib/"
 :xref.add_release(:xref, rel_dir)
 
-{:ok, calls} = :xref.q(:xref, '(App) (XC | [#{Enum.join(apps, ",")}] || mria:create_table/_)')
+{:ok, calls} = :xref.q(:xref, ~c"(App) (XC | [#{Enum.join(apps, ",")}] || mria:create_table/_)")
 
 emqx_calls =
   calls