diff --git a/HISTORY.rst b/HISTORY.rst
index fcfafe5b..2bf6e11d 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -1,7 +1,13 @@
 History
 -------
 
-0.6.5 (2011-10-19)
+0.6.6 (2011-10-19)
+++++++++++++++++++
+
+* Session parameter bugfix (params merging)
+
+
+0.6.5 (2011-10-18)
 ++++++++++++++++++
 
 * Offline (fast) test suite.
diff --git a/requests/core.py b/requests/core.py
index 9e518357..79449801 100644
--- a/requests/core.py
+++ b/requests/core.py
@@ -12,8 +12,8 @@ This module implements the main Requests system.
 """
 
 __title__ = 'requests'
-__version__ = '0.6.5'
-__build__ = 0x000605
+__version__ = '0.6.6'
+__build__ = 0x000606
 __author__ = 'Kenneth Reitz'
 __license__ = 'ISC'
 __copyright__ = 'Copyright 2011 Kenneth Reitz'