diff --git a/flake8/__init__.py b/flake8/__init__.py
index a3332a5..1db7ef8 100644
--- a/flake8/__init__.py
+++ b/flake8/__init__.py
@@ -1,2 +1,2 @@
 
-__version__ = '2.0'
+__version__ = '2.0a1'