diff --git a/mesonbuild/coredata.py b/mesonbuild/coredata.py
index 8dcee825d..80ad94f85 100644
--- a/mesonbuild/coredata.py
+++ b/mesonbuild/coredata.py
@@ -19,7 +19,7 @@ from .mesonlib import MesonException, commonpath
 from .mesonlib import default_libdir, default_libexecdir, default_prefix
 import ast
 
-version = '0.41.1'
+version = '0.42.0.dev1'
 backendlist = ['ninja', 'vs', 'vs2010', 'vs2015', 'vs2017', 'xcode']
 
 class UserOption: