diff --git a/lib/spack/spack/__init__.py b/lib/spack/spack/__init__.py
index 061604dfc6c..c9a8640b868 100644
--- a/lib/spack/spack/__init__.py
+++ b/lib/spack/spack/__init__.py
@@ -11,7 +11,7 @@
 import spack.util.git
 
 #: PEP440 canonical <major>.<minor>.<micro>.<devN> string
-__version__ = "0.23.1"
+__version__ = "0.23.2.dev0"
 spack_version = __version__