diff --git a/CHANGES.rst b/CHANGES.rst
index a2d0ab3..5d22862 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,3 +1,9 @@
+2.1 (unreleased)
+----------------
+
+- Nothing changed yet.
+
+
 2.1b1 (2024-01-12)
 ------------------
 
diff --git a/pyproject.toml b/pyproject.toml
index 7003dcc..c78a129 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "unoserver"
-version = "2.1b1"
+version = "2.1.dev0"
 description = "A server for file conversions with Libre Office"
 classifiers = [
     "Development Status :: 5 - Production/Stable",