diff --git a/mesonpy/__init__.py b/mesonpy/__init__.py
index 56627453..6cb90142 100644
--- a/mesonpy/__init__.py
+++ b/mesonpy/__init__.py
@@ -81,7 +81,7 @@ class InvalidLicenseExpression(Exception):  # type: ignore[no-redef]
     MesonArgs = Mapping[MesonArgsKeys, List[str]]
 
 
-__version__ = '0.18.0'
+__version__ = '0.19.0.dev0'
 
 
 _PYPROJECT_METADATA_VERSION = tuple(map(int, pyproject_metadata.__version__.split('.')[:2]))
diff --git a/pyproject.toml b/pyproject.toml
index 70818ab6..733d69a2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,7 +15,7 @@ requires = [
 
 [project]
 name = 'meson-python'
-version = '0.18.0'
+version = '0.19.0.dev0'
 description = 'Meson Python build backend (PEP 517)'
 readme = 'README.rst'
 requires-python = '>= 3.8'