diff --git a/CHANGELOG b/CHANGELOG
index 83f63601c..dcfd1496a 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,4 +1,4 @@
-Unreleased
+2.6.4.dev
 ----------
 
 - Improve assertion failure reporting on iterables, by using ndiff and pprint.
diff --git a/_pytest/__init__.py b/_pytest/__init__.py
index 378561b75..41703c08b 100644
--- a/_pytest/__init__.py
+++ b/_pytest/__init__.py
@@ -1,2 +1,2 @@
 #
-__version__ = '2.6.4.dev1'
+__version__ = '2.6.4.dev2'
diff --git a/setup.py b/setup.py
index 02d3100f5..7f699c85d 100644
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,7 @@ def main():
         name='pytest',
         description='pytest: simple powerful testing with Python',
         long_description=long_description,
-        version='2.6.4.dev1',
+        version='2.6.4.dev2',
         url='http://pytest.org',
         license='MIT license',
         platforms=['unix', 'linux', 'osx', 'cygwin', 'win32'],