diff --git a/composer.json b/composer.json
index 293d02760..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": "1.6.1",
+    "version": "1.7.0",
     "license": "BSD",
     "authors": [
         {
diff --git a/ext/twig/php_twig.h b/ext/twig/php_twig.h
index 798cac6e8..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 "1.6.1"
+#define PHP_TWIG_VERSION "1.7.0-DEV"
 
 #include "php.h"