diff --git a/composer.json b/composer.json
index 7133f48aad..5f1d465d9d 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
     "name": "sylius/sylius",
     "type": "library",
-    "version": "v1.12.2",
+    "version": "v1.12.3-dev",
     "description": "E-Commerce platform for PHP, based on Symfony framework.",
     "homepage": "https://sylius.com",
     "license": "MIT",
diff --git a/src/Sylius/Bundle/CoreBundle/SyliusCoreBundle.php b/src/Sylius/Bundle/CoreBundle/SyliusCoreBundle.php
index 9f7b27cdb2..4e74590645 100644
--- a/src/Sylius/Bundle/CoreBundle/SyliusCoreBundle.php
+++ b/src/Sylius/Bundle/CoreBundle/SyliusCoreBundle.php
@@ -40,17 +40,17 @@ use Symfony\Component\DependencyInjection\ContainerBuilder;
 
 final class SyliusCoreBundle extends AbstractResourceBundle
 {
-    public const VERSION = '1.12.2';
+    public const VERSION = '1.12.3-DEV';
 
-    public const VERSION_ID = '11202';
+    public const VERSION_ID = '11203';
 
     public const MAJOR_VERSION = '1';
 
     public const MINOR_VERSION = '12';
 
-    public const RELEASE_VERSION = '2';
+    public const RELEASE_VERSION = '3';
 
-    public const EXTRA_VERSION = '';
+    public const EXTRA_VERSION = 'DEV';
 
     public function getSupportedDrivers(): array
     {