diff --git a/changes/e5.2.1.en.md b/changes/e5.2.1.en.md
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+# e5.2.1
+
+## Enhancements
+
+- [#11487](https://github.com/emqx/emqx/pull/11487) The bcrypt work factor is limited to the range 5-10, because higher values consume too much CPU resources.
+  Bcrypt library is updated to allow parallel hash evaluation.
+
+- [#11532](https://github.com/emqx/emqx/pull/11532) Improve some error reasons when parsing invalid packets.
+
+- [#11568](https://github.com/emqx/emqx/pull/11568) Added support for defining templates for MQTT 5.0 publish properties and user properties in Republish rule action.
+
+- [#11612](https://github.com/emqx/emqx/pull/11612) During node evacuation, evacuate all disconnected sessions, not only those started with `clean_start` set to `false`.
+
+## Bug Fixes
+
+- [#11493](https://github.com/emqx/emqx/pull/11493) Examples and documentation for /api/v5/publish bad request response have been fixed. Previously the documentation example said that the bad request response could return a list in the body which was not actually the case.
+
+- [#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.
+
+- [#11506](https://github.com/emqx/emqx/pull/11506) Don't download a trace log file if it is empty.
+
+  After this fix, GET `/api/v5/trace/clientempty/download` returns 404 `{"code":"NOT_FOUND","message":"Trace is empty"}`
+  If no events matching the trace condition occurred.
+
+- [#11522](https://github.com/emqx/emqx/pull/11522) Improved error message for rule engine schema registry when schema name exceeds permissible length.
+
+- [#11531](https://github.com/emqx/emqx/pull/11531) Fixed issue where authorization cache cleaning cli was not working properly for specific client ID.
+
+- [#11564](https://github.com/emqx/emqx/pull/11564) Fix cluster partition autoheal functionality.
+  Implement autohealing for the clusters that split into multiple partitions.
+
+- [#11568](https://github.com/emqx/emqx/pull/11568) Fixed an issue where an ill-defined built-in rule action config could be interpreted as a custom user function.
+
+- [#11394](https://github.com/emqx/emqx/pull/11394) Upgrade Kafka producer client `wolff` from 1.7.6 to 1.7.7.
+  This fixes a potential race condition which may cause all Kafka producers to crash if some failed to initialize.
+
+- [#11401](https://github.com/emqx/emqx/pull/11401) When running one of the rule engine SQL `mongo_date` functions in the EMQX dashboard test interface, the resulting date is formatted as `ISODate(*)`, where * is the date in ISO date format instead of only the ISO date string. This is the format used by MongoDB to store dates.
+
+- [#11547](https://github.com/emqx/emqx/pull/11547) Fix several emqx_bridge issues:
+
+  - fix Cassandra bridge connect error occurring when the bridge is configured without username/password
+  (Cassandra doesn't require user credentials when it is configured with `authenticator: AllowAllAuthenticator`)
+  - fix SQL Server bridge connect error caused by an empty password
+  - make `username` a required field in Oracle bridge
+  - fix IoTDB bridge error caused by setting base URL without scheme (e.g. `<host>:<port>`)
+
+- [#11630](https://github.com/emqx/emqx/pull/11630) Fixed an issue where the core node could get stuck in the `mria_schema:bootstrap/0` state, preventing new nodes from joining the cluster.
diff --git a/changes/v5.2.1.en.md b/changes/v5.2.1.en.md
new file mode 100644
index 000000000..e99ad5e90
--- /dev/null
+++ b/changes/v5.2.1.en.md
@@ -0,0 +1,34 @@
+# v5.2.1
+
+## Enhancements
+
+- [#11487](https://github.com/emqx/emqx/pull/11487) The bcrypt work factor is limited to the range 5-10, because higher values consume too much CPU resources.
+  Bcrypt library is updated to allow parallel hash evaluation.
+
+- [#11532](https://github.com/emqx/emqx/pull/11532) Improve some error reasons when parsing invalid packets.
+
+- [#11568](https://github.com/emqx/emqx/pull/11568) Added support for defining templates for MQTT 5.0 publish properties and user properties in Republish rule action.
+
+## Bug Fixes
+
+- [#11493](https://github.com/emqx/emqx/pull/11493) Examples and documentation for /api/v5/publish bad request response have been fixed. Previously the documentation example said that the bad request response could return a list in the body which was not actually the case.
+
+- [#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.
+
+- [#11506](https://github.com/emqx/emqx/pull/11506) Don't download a trace log file if it is empty.
+
+  After this fix, GET `/api/v5/trace/clientempty/download` returns 404 `{"code":"NOT_FOUND","message":"Trace is empty"}`
+  If no events matching the trace condition occurred.
+
+- [#11522](https://github.com/emqx/emqx/pull/11522) Improved error message for rule engine schema registry when schema name exceeds permissible length.
+
+- [#11531](https://github.com/emqx/emqx/pull/11531) Fixed issue where authorization cache cleaning cli was not working properly for specific client ID.
+
+- [#11564](https://github.com/emqx/emqx/pull/11564) Fix cluster partition autoheal functionality.
+  Implement autohealing for the clusters that split into multiple partitions.
+
+- [#11568](https://github.com/emqx/emqx/pull/11568) Fixed an issue where an ill-defined built-in rule action config could be interpreted as a custom user function.
+
+- [#11630](https://github.com/emqx/emqx/pull/11630) Fixed an issue where the core node could get stuck in the `mria_schema:bootstrap/0` state, preventing new nodes from joining the cluster.