diff --git a/changelogs/4.23.md b/changelogs/4.23.md
index 6a5c5d49a..c87364d67 100644
--- a/changelogs/4.23.md
+++ b/changelogs/4.23.md
@@ -17,3 +17,10 @@ Consider using the `mcpe-protocol` directive in `plugin.yml` as a constraint if
 
 ## Fixes
 - Fixed Docker image build failure due to outdated `build/php` submodule.
+
+# 4.23.1
+Released 14th July 2023.
+
+## Fixes
+- Hardened validation of JWT signing keys in `LoginPacket`.
+- Fixed server crash due to a bug in upstream dependency [`netresearch/jsonmapper`](https://github.com/cweiske/JsonMapper).
diff --git a/changelogs/5.3.md b/changelogs/5.3.md
index c575cf01b..0a776a11e 100644
--- a/changelogs/5.3.md
+++ b/changelogs/5.3.md
@@ -21,3 +21,13 @@ If you're upgrading directly from 5.1.x to 5.3.x, please also read the following
 
 ## Internals
 - `BlockTypeNames`, `BlockStateNames`, `BlockStateStringValues` and `ItemTypeNames` in the `pocketmine\data\bedrock` package have BC-breaking changes to accommodate Bedrock 1.20.10.
+
+# 5.3.1
+Released 14th July 2023.
+
+## Included releases
+**This release includes changes from the following releases:**
+- [4.23.1](https://github.com/pmmp/PocketMine-MP/blob/4.23.1/changelogs/4.23.md#4231) - Security fixes
+
+## General
+- Updated `build/php` submodule to pmmp/PHP-Binaries@e0c918d1379465964acefd562d9e48f87cfc2c9e.
diff --git a/src/VersionInfo.php b/src/VersionInfo.php
index 40e83b5d2..2efc577d5 100644
--- a/src/VersionInfo.php
+++ b/src/VersionInfo.php
@@ -32,7 +32,7 @@ use function str_repeat;
 final class VersionInfo{
 	public const NAME = "PocketMine-MP";
 	public const BASE_VERSION = "5.3.1";
-	public const IS_DEVELOPMENT_BUILD = true;
+	public const IS_DEVELOPMENT_BUILD = false;
 	public const BUILD_CHANNEL = "stable";
 
 	/**