diff --git a/pyproject.toml b/pyproject.toml
index d25521a..f43ce39 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,7 +16,7 @@ sources = ["src"]
 # https://peps.python.org/pep-0621/
 [project]
 name = "abba-python"
-version = "0.10.1rc0"
+version = "0.10.1.dev0"
 description = "Aligning Big Brains and Atlases (ABBA), controlled from python."
 readme = "README.md"
 requires-python = ">=3.9"