diff --git a/src/Environment.php b/src/Environment.php
index 9ea3cebf5..af6ff4efb 100644
--- a/src/Environment.php
+++ b/src/Environment.php
@@ -38,12 +38,12 @@ use Twig\TokenParser\TokenParserInterface;
  */
 class Environment
 {
-    const VERSION = '3.0.3';
-    const VERSION_ID = 30003;
+    const VERSION = '3.0.4-DEV';
+    const VERSION_ID = 30004;
     const MAJOR_VERSION = 3;
     const MINOR_VERSION = 0;
-    const RELEASE_VERSION = 3;
-    const EXTRA_VERSION = '';
+    const RELEASE_VERSION = 4;
+    const EXTRA_VERSION = 'DEV';
 
     private $charset;
     private $loader;