diff --git a/CHANGELOG-4.2.md b/CHANGELOG-4.2.md
index 1c2372bb2ead..96994ff62024 100644
--- a/CHANGELOG-4.2.md
+++ b/CHANGELOG-4.2.md
@@ -7,6 +7,40 @@ in 4.2 minor versions.
 To get the diff for a specific change, go to https://github.com/symfony/symfony/commit/XXX where XXX is the change hash
 To get the diff between two versions, go to https://github.com/symfony/symfony/compare/v4.2.0...v4.2.1
 
+* 4.2.3 (2019-02-03)
+
+ * bug #30050 [Cache] fix pruning pdo cache for vendors that throw on execute (bendavies)
+ * bug #30046 [DI] Fix dumping Doctrine-like service graphs (nicolas-grekas)
+ * bug #30028 [Form] fix some docblocks and type checks (xabbuh)
+ * bug #30037 Disable Twig in the profiler menu when Twig is not used (javiereguiluz)
+ * bug #30026 [VarDumper] dont implement Serializable in Stub (nicolas-grekas)
+ * bug #30034 [Config] ensure moving away from Serializable wont break cache:clear (nicolas-grekas)
+ * bug #29532 [Messenger] fixed RabbitMQ arguments not passed as integer values (thePanz)
+ * bug #30013 [Routing] dont redirect routes with greedy trailing vars with no explicit slash (nicolas-grekas)
+ * bug #30006 [Security] don't do nested calls to serialize() (nicolas-grekas, Renan)
+ * bug #30007 [FrameworkBundle] Support use of hyphen in asset package name (damaya, XuruDragon)
+ * bug #30004 Fix format strings for deprecation notices (TysonAndre)
+ * bug #29984 [VarDumper] Fixed search bar (ro0NL)
+ * bug #29764 [HttpFoundation] Check file exists before unlink (adam-mospan)
+ * bug #29783 [HttpFoundation] MemcachedSessionHandler::close() must close connection (grachevko)
+ * bug #29794 Always pass $key to NullAdapter->createCacheItem (TysonAndre)
+ * bug #29844 [Console] Fixed #29835: ConfirmationQuestion with default true for answer '0' (mrthehud)
+ * bug #29869 [Debug][ErrorHandler] Preserve our error handler when a logger sets another one (fancyweb)
+ * bug #29900 [Cache] PDO-based cache pool table autocreation does not work (errogaht)
+ * bug #29926 [Form] Changed UrlType input type to text when default_protocol is not null (MatTheCat)
+ * bug #29961 [Translation] Concatenated translation messages (Stadly)
+ * bug #29847 [Cache] fix used variable name (xabbuh)
+ * bug #29920 [Debug][DebugClassLoader] Match more cases for final, deprecated and internal classes / methods extends (fancyweb)
+ * bug #29922 Avoid dots in generated class names (derrabus)
+ * bug #29863 [Security] Do not mix password_*() API with libsodium one (chalasr)
+ * bug #29894 [DependencyInjection] the string "0" is a valid service identifier (xabbuh)
+ * bug #29885 Update MimeType extensions (fabpot)
+ * bug #29875 [TwigBridge] fix compatibility with Twig >= 2.6.1 (xabbuh)
+ * bug #29873 [Debug] remove return type hint for PHP 5 compatibility (xabbuh)
+ * bug #29837 Fix SwiftMailerHandler to support Monolog's latest reset functionality (Seldaek)
+ * bug #29853 Revert "bug #29597 [DI] fix reporting bindings on overriden services as unused" (mmarynich)
+ * bug #29833 [DebugClassLoader] expose proxyfied findFile() method (fancyweb)
+
 * 4.2.2 (2019-01-06)
 
  * bug #29494 [HttpFoundation] Fix request uri when it starts with double slashes (alquerci)
diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index 981aa0f39c2e..c5e351ca3a20 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -73,12 +73,12 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
     private $requestStackSize = 0;
     private $resetServices = false;
 
-    const VERSION = '4.2.3-DEV';
+    const VERSION = '4.2.3';
     const VERSION_ID = 40203;
     const MAJOR_VERSION = 4;
     const MINOR_VERSION = 2;
     const RELEASE_VERSION = 3;
-    const EXTRA_VERSION = 'DEV';
+    const EXTRA_VERSION = '';
 
     const END_OF_MAINTENANCE = '07/2019';
     const END_OF_LIFE = '01/2020';