diff --git a/multiauthenticator/__init__.py b/multiauthenticator/__init__.py
index 228f02a..0a30536 100644
--- a/multiauthenticator/__init__.py
+++ b/multiauthenticator/__init__.py
@@ -7,4 +7,4 @@
 # __version__ should be updated using tbump, based on configuration in
 # pyproject.toml.
 #
-__version__ = "0.2.0"
+__version__ = "0.3.0.dev"
diff --git a/pyproject.toml b/pyproject.toml
index b3b5124..94e7372 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "jupyterhub-multiauthenticator"
-version = "0.2.0"
+version = "0.3.0.dev"
 authors = [{name = "Samuel Gaist", email = "samuel.gaist@idiap.ch"}]
 description = "Authenticator multiplexer for JupyterHub"
 readme = "README.md"
@@ -99,7 +99,7 @@ show_missing = true
 github_url = "https://github.com/idiap/multiauthenticator"
 
 [tool.tbump.version]
-current = "0.2.0"
+current = "0.3.0.dev"
 regex = '''
     (?P<major>\d+)
     \.