diff --git a/CHANGELOG b/CHANGELOG
index 0e7b85b25..c5716be7b 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,4 +1,4 @@
-* 1.11.2 (2012-XX-XX)
+* 1.12.0 (2012-XX-XX)
 
  * added support for extended ternary operator syntaxes
 
diff --git a/composer.json b/composer.json
index 3bbc5cab1..5530d282e 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "1.11-dev"
+            "dev-master": "1.12-dev"
         }
     }
 }
diff --git a/ext/twig/php_twig.h b/ext/twig/php_twig.h
index 9d34084cb..e48061384 100644
--- a/ext/twig/php_twig.h
+++ b/ext/twig/php_twig.h
@@ -15,7 +15,7 @@
 #ifndef PHP_TWIG_H
 #define PHP_TWIG_H
 
-#define PHP_TWIG_VERSION "1.11.2-DEV"
+#define PHP_TWIG_VERSION "1.12.0-DEV"
 
 #include "php.h"
 
diff --git a/lib/Twig/Environment.php b/lib/Twig/Environment.php
index e80ec1e4b..5453bcb6d 100644
--- a/lib/Twig/Environment.php
+++ b/lib/Twig/Environment.php
@@ -17,7 +17,7 @@
  */
 class Twig_Environment
 {
-    const VERSION = '1.11.2-DEV';
+    const VERSION = '1.12.0-DEV';
 
     protected $charset;
     protected $loader;