diff --git a/CHANGELOG b/CHANGELOG
index 0f6abc763..1eeaac074 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+* 1.7.0-DEV
+
+ * n/a
+
 * 1.6.0 (2012-02-04)
 
  * fixed raw blocks when used with the whitespace trim option
diff --git a/composer.json b/composer.json
index 0aa9abc26..0138ed022 100644
--- a/composer.json
+++ b/composer.json
@@ -4,7 +4,7 @@
     "description": "Twig, the flexible, fast, and secure template language for PHP",
     "keywords": ["templating"],
     "homepage": "http://twig.sensiolabs.org",
-    "version": "1.6.0",
+    "version": "1.7.0",
     "license": "BSD",
     "authors": [
         {
diff --git a/ext/twig/php_twig.h b/ext/twig/php_twig.h
index 23195bfb2..f00d9b166 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 "1.6.0"
+#define PHP_TWIG_VERSION "1.7.0-DEV"
 
 #include "php.h"
 
diff --git a/lib/Twig/Environment.php b/lib/Twig/Environment.php
index 1a743f737..6a84e831c 100644
--- a/lib/Twig/Environment.php
+++ b/lib/Twig/Environment.php
@@ -17,7 +17,7 @@
  */
 class Twig_Environment
 {
-    const VERSION = '1.6.0';
+    const VERSION = '1.7.0-DEV';
 
     protected $charset;
     protected $loader;