diff --git a/src/semantic_version/__init__.py b/src/semantic_version/__init__.py
index 2c73f3d..14caece 100644
--- a/src/semantic_version/__init__.py
+++ b/src/semantic_version/__init__.py
@@ -2,7 +2,7 @@
 # Copyright (c) 2012 Raphaël Barrois
 
 
-__version__ = '0.1.0'
+__version__ = '1.0.0-alpha'
 
 
 from .base import compare, match, Version, Spec