diff --git a/HISTORY.rst b/HISTORY.rst
index f9e6a21a5b86c0fb5362c65ac1e8e246fd28992e..976a1d23fd12d4edbd9a3b0be6a2eb4fa175f74f 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -5,6 +5,18 @@ History
 
 .. to_doc
 
+---------------------
+0.6.0.dev0
+---------------------
+
+    
+
+---------------------
+0.6.0.dev0
+---------------------
+
+    
+
 ------------------------
 0.5.0 (2015-05-08)
 ------------------------
diff --git a/pulsar/__init__.py b/pulsar/__init__.py
index 7568cb956ad33bfe79541d796097e8847998cf7e..1969b4265e058483d09185bec6cdaa5fe429b504 100644
--- a/pulsar/__init__.py
+++ b/pulsar/__init__.py
@@ -1,3 +1,3 @@
 # -*- coding: utf-8 -*-
 
-__version__ = '0.5.0'
+__version__ = '0.6.0.dev0'