diff --git a/README.md b/README.md
index 96ac893..07a65ba 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,7 @@ It's an (un)fortunate coincidence that a Open/LibreOffice presentation tool is c
 VERSION HISTORY
 -----------------
 
+### 0.5.2 (in development)
 
 ### 0.5.1 ([browse](http://github.com/bartaz/impress.js/tree/0.5.1), [zip](http://github.com/bartaz/impress.js/zipball/0.5.1), [tar](http://github.com/bartaz/impress.js/tarball/0.5.1))
 
diff --git a/js/impress.js b/js/impress.js
index 35e8c29..fb65c26 100644
--- a/js/impress.js
+++ b/js/impress.js
@@ -11,7 +11,7 @@
  *
  * ------------------------------------------------
  *  author:  Bartek Szopka
- *  version: 0.5.1
+ *  version: 0.5.2 (in development)
  *  url:     http://bartaz.github.com/impress.js/
  *  source:  http://github.com/bartaz/impress.js/
  */