diff --git a/pyproject.toml b/pyproject.toml
index bb1f02b..c650d63 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "routing-pyramids"
-version = "0.1.0"
+version = "0.1.0a1"
 description = "Unsupervised Learning of Cell Instances with Generative Routing Pyramids"
 readme = "README.md"
 requires-python = ">=3.12"
diff --git a/uv.lock b/uv.lock
index a05b249..029a9ff 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1717,7 +1717,7 @@ wheels = [
 
 [[package]]
 name = "routing-pyramids"
-version = "0.1.0"
+version = "0.1.0a1"
 source = { editable = "." }
 dependencies = [
     { name = "cmap" },