diff --git a/CHANGELOG b/CHANGELOG
index 793443cf6..cc1a82081 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+* 1.12.1 (2012-XX-XX)
+
+ * n/a
+
 * 1.12.0 (2012-01-08)
 
  * added verbatim as an alias for the raw tag to avoid confusion with the raw filter
diff --git a/ext/twig/php_twig.h b/ext/twig/php_twig.h
index 876961a05..af08798ac 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 "1.12.0"
+#define PHP_TWIG_VERSION "1.12.1-DEV"
 
 #include "php.h"
 
diff --git a/lib/Twig/Environment.php b/lib/Twig/Environment.php
index 5104e9ace..ea2b98f90 100644
--- a/lib/Twig/Environment.php
+++ b/lib/Twig/Environment.php
@@ -17,7 +17,7 @@
  */
 class Twig_Environment
 {
-    const VERSION = '1.12.0';
+    const VERSION = '1.12.1-DEV';
 
     protected $charset;
     protected $loader;