diff --git a/setup.py b/setup.py
index 8053c9b2f2fe8d550f38e809a6ff62d091e3d6ec..34c0baa3d42ec754f6cb2a7f57a0c051e18405ec 100644
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,7 @@ from setuptools.command.install import install
 
 HERE = Path(os.path.abspath(os.path.dirname(__file__)))
 
-VERSION = '0.2.0'
+VERSION = '1.0.0a'
 
 base = [
     "editdistance",