diff --git a/gunicorn/__init__.py b/gunicorn/__init__.py
index 7bb14ea6..e0a7abbe 100644
--- a/gunicorn/__init__.py
+++ b/gunicorn/__init__.py
@@ -4,4 +4,4 @@
 # See the NOTICE for more information.
 
 
-__version__ = "0.6.5"
+__version__ = "0.6.7"
diff --git a/gunicorn/pidfile.py b/gunicorn/pidfile.py
index 7252375d..e06d85fc 100644
--- a/gunicorn/pidfile.py
+++ b/gunicorn/pidfile.py
@@ -3,6 +3,8 @@
 # This file is part of gunicorn released under the MIT license. 
 # See the NOTICE for more information.
 
+from __future__ import with_statement
+
 import errno
 import os
 import tempfile