diff --git a/doc/source/conf.py b/doc/source/conf.py
index 4a275cd1..236cb807 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -49,9 +49,9 @@ copyright = '2011, Luke Campagnola'
 # built documents.
 #
 # The short X.Y version.
-version = '0.9.0'
+version = ''
 # The full version, including alpha/beta/rc tags.
-release = '0.9.0'
+release = ''
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/pyqtgraph/__init__.py b/pyqtgraph/__init__.py
index 2998be79..93d9f7b8 100644
--- a/pyqtgraph/__init__.py
+++ b/pyqtgraph/__init__.py
@@ -4,7 +4,7 @@ PyQtGraph - Scientific Graphics and GUI Library for Python
 www.pyqtgraph.org
 """
 
-__version__ = '0.9.0'
+__version__ = None
 
 ### import all the goodies and add some helper functions for easy CLI use
 
diff --git a/setup.py b/setup.py
index 8833b1d8..8128a851 100644
--- a/setup.py
+++ b/setup.py
@@ -15,7 +15,7 @@ if os.path.isdir(buildPath):
     distutils.dir_util.remove_tree(buildPath)
 
 setup(name='pyqtgraph',
-    version='0.9.0',
+    version='',
     description='Scientific Graphics and GUI Library for Python',
     long_description="""\
 PyQtGraph is a pure-python graphics and GUI library built on PyQt4/PySide and numpy.