diff --git a/packages/darnit-baseline/pyproject.toml b/packages/darnit-baseline/pyproject.toml
index 393d6ee..005b7bf 100644
--- a/packages/darnit-baseline/pyproject.toml
+++ b/packages/darnit-baseline/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "darnit-baseline"
-version = "0.1.0"
+version = "0.0.0rc0"
 description = "OpenSSF Baseline (OSPS v2025.10.10) compliance checks for darnit"
 readme = "README.md"
 requires-python = ">=3.11"
diff --git a/packages/darnit-gittuf/pyproject.toml b/packages/darnit-gittuf/pyproject.toml
index 6a89ef8..b7e5e64 100644
--- a/packages/darnit-gittuf/pyproject.toml
+++ b/packages/darnit-gittuf/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "darnit-gittuf"
-version = "0.1.0"
+version = "0.0.0rc0"
 description = "Gittuf policy checks plugin for darnit"
 readme = "README.md"
 requires-python = ">=3.11"
diff --git a/packages/darnit/pyproject.toml b/packages/darnit/pyproject.toml
index fb0ebcf..0bd5db0 100644
--- a/packages/darnit/pyproject.toml
+++ b/packages/darnit/pyproject.toml
@@ -4,7 +4,7 @@
 # the PyPI distribution name is `darnit-core`, to avoid a conflict with a
 # similarly-named project on PyPI.
 name = "darnit-core"
-version = "0.1.0"
+version = "0.0.0rc0"
 description = "Generic compliance audit framework with plugin architecture"
 readme = "README.md"
 requires-python = ">=3.11"
diff --git a/pyproject.toml b/pyproject.toml
index ad31da7..f8021cc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "darnit-mcp"
-version = "0.1.0"
+version = "0.0.0rc0"
 description = "MCP server for compliance auditing using the darnit framework"
 readme = "README.md"
 requires-python = ">=3.11"
diff --git a/uv.lock b/uv.lock
index e1c4728..57f6bf4 100644
--- a/uv.lock
+++ b/uv.lock
@@ -428,7 +428,7 @@ wheels = [
 
 [[package]]
 name = "darnit-baseline"
-version = "0.1.0"
+version = "0.0.0rc0"
 source = { editable = "packages/darnit-baseline" }
 dependencies = [
     { name = "darnit-core" },
@@ -445,7 +445,7 @@ requires-dist = [
 
 [[package]]
 name = "darnit-core"
-version = "0.1.0"
+version = "0.0.0rc0"
 source = { editable = "packages/darnit" }
 dependencies = [
     { name = "cel-python" },
@@ -495,7 +495,7 @@ requires-dist = [{ name = "darnit-core", editable = "packages/darnit" }]
 
 [[package]]
 name = "darnit-gittuf"
-version = "0.1.0"
+version = "0.0.0rc0"
 source = { editable = "packages/darnit-gittuf" }
 dependencies = [
     { name = "darnit-core" },
@@ -517,7 +517,7 @@ requires-dist = [{ name = "darnit-core", editable = "packages/darnit" }]
 
 [[package]]
 name = "darnit-mcp"
-version = "0.1.0"
+version = "0.0.0rc0"
 source = { virtual = "." }
 dependencies = [
     { name = "darnit-baseline" },