diff --git a/Rakefile b/Rakefile
index f546b74..e4f862e 100644
--- a/Rakefile
+++ b/Rakefile
@@ -56,7 +56,7 @@ templated_build "qooxdoo"
 task :minify do
   # npm install uglify-js
   mmjs = "mustache.min.js"
-  `echo "/*! Version: 0.4.2 */" > #{mmjs}`
+  `echo "/*! Version: 0.4.3-dev */" > #{mmjs}`
   `uglifyjs mustache.js >> #{mmjs}`
   puts "Created #{mmjs}"
 end
diff --git a/mustache.js b/mustache.js
index 4ac3fae..543570a 100644
--- a/mustache.js
+++ b/mustache.js
@@ -417,7 +417,7 @@ var Mustache = function () {
 
   return({
     name: "mustache.js",
-    version: "0.4.2",
+    version: "0.4.3-dev",
 
     /*
       Turns a template and view into HTML
diff --git a/mustache.js.nuspec b/mustache.js.nuspec
index 5ca1bb5..53a78a4 100644
--- a/mustache.js.nuspec
+++ b/mustache.js.nuspec
@@ -2,7 +2,7 @@
 <package >
   <metadata>
     <id>mustache.js</id>
-    <version>0.4.2</version>
+    <version>0.4.3-dev</version>
     <authors>mustache.js Authors</authors>
     <licenseUrl>https://github.com/janl/mustache.js/blob/master/LICENSE</licenseUrl>
     <projectUrl>http://mustache.github.com/</projectUrl>
diff --git a/wrappers/qooxdoo/qooxdoo.mustache.js.tpl.pre b/wrappers/qooxdoo/qooxdoo.mustache.js.tpl.pre
index f7d1014..3ecd7ad 100644
--- a/wrappers/qooxdoo/qooxdoo.mustache.js.tpl.pre
+++ b/wrappers/qooxdoo/qooxdoo.mustache.js.tpl.pre
@@ -19,7 +19,7 @@
 
    This class contains code based on the following work:
 
-   * Mustache.js version 0.4.2
+   * Mustache.js version 0.4.3-dev
 
      Code:
        https://github.com/janl/mustache.js