diff --git a/lib/spack/spack/__init__.py b/lib/spack/spack/__init__.py
index a21fbcc04a46133b95c8c3f94edecced184406d4..96c4d3541942479bd919e06da76d1c576c0cc721 100644
--- a/lib/spack/spack/__init__.py
+++ b/lib/spack/spack/__init__.py
@@ -4,7 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 #: PEP440 canonical <major>.<minor>.<micro>.<devN> string
-__version__ = "0.20.1-dev"
+__version__ = "0.20.1"
 spack_version = __version__