diff --git a/src/Sylius/Bundle/CoreBundle/Application/Kernel.php b/src/Sylius/Bundle/CoreBundle/Application/Kernel.php
index <HASH>..<HASH> 100644
--- a/src/Sylius/Bundle/CoreBundle/Application/Kernel.php
+++ b/src/Sylius/Bundle/CoreBundle/Application/Kernel.php
@@ -31,12 +31,12 @@ use Webmozart\Assert\Assert;
 
 class Kernel extends HttpKernel
 {
-    public const VERSION = '1.2.14';
-    public const VERSION_ID = '10214';
+    public const VERSION = '1.2.15-DEV';
+    public const VERSION_ID = '10215';
     public const MAJOR_VERSION = '1';
     public const MINOR_VERSION = '2';
-    public const RELEASE_VERSION = '14';
-    public const EXTRA_VERSION = '';
+    public const RELEASE_VERSION = '15';
+    public const EXTRA_VERSION = 'DEV';
 
     /**
      * {@inheritdoc}
Change application's version to <I>-DEV