diff --git a/Directory.Build.props b/Directory.Build.props
index ff9cf6432cb..1a105674598 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -2,7 +2,7 @@
Copyright © 2013-$([System.DateTime]::Now.Year) Akka.NET Team
Akka.NET Team
- 1.5.52
+ 1.5.53
akkalogo.png
https://getakka.net/
Apache-2.0
@@ -50,25 +50,24 @@
true
- **SECURITY PATCH**
+ Akka.NET v1.5.53 is a security patch containing important fixes for TLS/SSL hostname validation and improved error diagnostics for certificate authentication issues.
-Akka.NET v1.5.52 is a security patch containing crucial fixes for enforcing certificate-based authentication using mTLS enforcement. Please see https://getakka.net/articles/remoting/security.html for details on how this works.
+**Security Fixes:**
-* [Akka.Remote: implement mutual TLS authentication support](https://github.com/akkadotnet/akka.net/pull/7851)
-* [Akka.Remote: validate SSL certificate private key access at server startup](https://github.com/akkadotnet/akka.net/pull/7847)
+* [Fix TLS hostname validation bug and add configurable validation](https://github.com/akkadotnet/akka.net/pull/7897) - Fixes a critical bug where TLS clients validated against their own certificate DNS name instead of the remote server address, particularly affecting mutual TLS scenarios. This release also adds a new `validate-certificate-hostname` configuration option to `akka.remote.dot-netty.tcp` (defaults to `false` for backward compatibility) and introduces type-safe validation APIs through the new `TlsValidationCallbacks` factory class.
-Other fixes:
+**Improvements:**
-* [Akka.Cluster.Sharding: ShardedDaemonSets: randomize starting worker index](https://github.com/akkadotnet/akka.net/pull/7857)
+* [Improve TLS/SSL certificate error messages during handshake failures](https://github.com/akkadotnet/akka.net/pull/7891) - Provides human-readable, actionable error messages for TLS/SSL certificate validation failures with detailed troubleshooting guidance, significantly improving the developer experience when configuring certificate-based authentication.
-1 contributors since release 1.5.51
+1 contributor since release 1.5.52
| COMMITS | LOC+ | LOC- | AUTHOR |
| --- | --- | --- | --- |
-| 3 | 1193 | 149 | Aaron Stannard |
+| 2 | 1060 | 77 | Aaron Stannard |
-To [see the full set of changes in Akka.NET v1.5.52, click here](https://github.com/akkadotnet/akka.net/milestone/135?closed=1)
+To [see the full set of changes in Akka.NET v1.5.53, click here](https://github.com/akkadotnet/akka.net/milestone/136?closed=1)
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 7d3e3262c27..f8e2e9ac578 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,3 +1,24 @@
+#### 1.5.53 October 9th, 2025 ####
+
+Akka.NET v1.5.53 is a security patch containing important fixes for TLS/SSL hostname validation and improved error diagnostics for certificate authentication issues.
+
+**Security Fixes:**
+
+* [Fix TLS hostname validation bug and add configurable validation](https://github.com/akkadotnet/akka.net/pull/7897) - Fixes a critical bug where TLS clients validated against their own certificate DNS name instead of the remote server address, particularly affecting mutual TLS scenarios. This release also adds a new `validate-certificate-hostname` configuration option to `akka.remote.dot-netty.tcp` (defaults to `false` for backward compatibility) and introduces type-safe validation APIs through the new `TlsValidationCallbacks` factory class.
+
+**Improvements:**
+
+* [Improve TLS/SSL certificate error messages during handshake failures](https://github.com/akkadotnet/akka.net/pull/7891) - Provides human-readable, actionable error messages for TLS/SSL certificate validation failures with detailed troubleshooting guidance, significantly improving the developer experience when configuring certificate-based authentication.
+
+1 contributor since release 1.5.52
+
+| COMMITS | LOC+ | LOC- | AUTHOR |
+| --- | --- | --- | --- |
+| 2 | 1060 | 77 | Aaron Stannard |
+
+
+To [see the full set of changes in Akka.NET v1.5.53, click here](https://github.com/akkadotnet/akka.net/milestone/136?closed=1)
+
#### 1.5.52 October 6th, 2025 ####
**SECURITY PATCH**