diff --git a/CHANGELOG b/CHANGELOG
index 34438edc4..198afb7e4 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,4 +1,4 @@
-* 1.7.0 (2012-XX-XX)
+* 1.6.3 (2012-03-22)
 
  * fixed usage of Z_ADDREF_P for PHP 5.2 in the C extension
  * fixed compilation of numeric values used in templates when using a locale where the decimal separator is not a dot
diff --git a/composer.json b/composer.json
index 0138ed022..ef4d58ee1 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": "1.7.0",
+    "version": "1.6.3",
     "license": "BSD",
     "authors": [
         {
diff --git a/ext/twig/php_twig.h b/ext/twig/php_twig.h
index f00d9b166..a080bbe72 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 "1.7.0-DEV"
+#define PHP_TWIG_VERSION "1.6.3"
 
 #include "php.h"
 
diff --git a/lib/Twig/Environment.php b/lib/Twig/Environment.php
index e69ff9d13..3fcaeb8e9 100644
--- a/lib/Twig/Environment.php
+++ b/lib/Twig/Environment.php
@@ -17,7 +17,7 @@
  */
 class Twig_Environment
 {
-    const VERSION = '1.7.0-DEV';
+    const VERSION = '1.6.3';
 
     protected $charset;
     protected $loader;