diff --git a/CHANGELOG b/CHANGELOG
index d2767b922..25513cff7 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,4 +1,4 @@
-* 1.12.1 (2013-XX-XX)
+* 1.12.1 (2013-01-15)
 
  * added support for object instances as the second argument of the constant function
  * relaxed globals management to avoid a BC break
diff --git a/ext/twig/php_twig.h b/ext/twig/php_twig.h
index af08798ac..1508b0eff 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 "1.12.1-DEV"
+#define PHP_TWIG_VERSION "1.12.1"
 
 #include "php.h"
 
diff --git a/lib/Twig/Environment.php b/lib/Twig/Environment.php
index 90f4aa315..eabbf0ada 100644
--- a/lib/Twig/Environment.php
+++ b/lib/Twig/Environment.php
@@ -17,7 +17,7 @@
  */
 class Twig_Environment
 {
-    const VERSION = '1.12.1-DEV';
+    const VERSION = '1.12.1';
 
     protected $charset;
     protected $loader;