diff --git a/setup.py b/setup.py
index 92a94de6..8c5e207f 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@
 with open("README.md", "r") as fh:
     long_description = fh.read()
 
-version = "0.9.1a0"
+version = "0.10.0a0"
 
 setup(
     name="ward",