diff --git a/_pytest/__init__.py b/_pytest/__init__.py
index 7b847ba47..a1a02b7bf 100644
--- a/_pytest/__init__.py
+++ b/_pytest/__init__.py
@@ -1,2 +1,2 @@
 #
-__version__ = '2.5.3.dev1'
+__version__ = '2.6.0.dev1'
diff --git a/setup.py b/setup.py
index 1cd79f875..1e81685f2 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='2.5.3.dev1',
+        version='2.6.0.dev1',
         url='http://pytest.org',
         license='MIT license',
         platforms=['unix', 'linux', 'osx', 'cygwin', 'win32'],