diff --git a/HISTORY.rst b/HISTORY.rst
index 5d2ba1e..01aba67 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -1,6 +1,17 @@
 History
 =======
 
+0.6.4 (2010-09-13)
+------------------
+
+* Updated unicode export for XLS
+* More exhaustive unit tests
+
+0.6.3(2010-09-14)
+----------------
+
+* Added Dataset.append() support for columns
+
 0.6.2 (2010-09-13)
 ------------------
 * Fixed Dataset.append() error on empty dataset.
diff --git a/setup.py b/setup.py
index 02c84d3..f9b71ea 100644
--- a/setup.py
+++ b/setup.py
@@ -18,7 +18,7 @@ if sys.argv[-1] == "publish":
 
 setup(
 	name='tablib',
-	version='0.6.3',
+	version='0.6.4',
 	description='Format agnostic tabular data library (XLS, JSON, YAML, CSV)',
 	long_description=open('README.rst').read() + '\n\n' +
 	                 open('HISTORY.rst').read(),
diff --git a/tablib/core.py b/tablib/core.py
index e4ceee1..015a072 100644
--- a/tablib/core.py
+++ b/tablib/core.py
@@ -21,8 +21,8 @@ from helpers import *
 # __all__ = ['Dataset', 'DataBook']
 
 __name__ = 'tablib'
-__version__ = '0.6.3'
-__build__ = 0x000603
+__version__ = '0.6.4'
+__build__ = 0x000604
 __author__ = 'Kenneth Reitz'
 __license__ = 'MIT'
 __copyright__ = 'Copyright 2010 Kenneth Reitz'