diff --git a/var/spack/repos/builtin.mock/packages/dependency-mv/package.py b/var/spack/repos/builtin.mock/packages/dependency-mv/package.py
index ed2cc5408a..42a552b758 100644
--- a/var/spack/repos/builtin.mock/packages/dependency-mv/package.py
+++ b/var/spack/repos/builtin.mock/packages/dependency-mv/package.py
@@ -1,4 +1,4 @@
-# Copyright 2013-2024 Lawrence Livermore National Security, LLC and other
+# Copyright 2013-2023 Lawrence Livermore National Security, LLC and other
 # Spack Project Developers. See the top-level COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
diff --git a/var/spack/repos/builtin.mock/packages/forward-multi-value/package.py b/var/spack/repos/builtin.mock/packages/forward-multi-value/package.py
index 1bdd696c4e..bfbb3f180c 100644
--- a/var/spack/repos/builtin.mock/packages/forward-multi-value/package.py
+++ b/var/spack/repos/builtin.mock/packages/forward-multi-value/package.py
@@ -1,4 +1,4 @@
-# Copyright 2013-2024 Lawrence Livermore National Security, LLC and other
+# Copyright 2013-2023 Lawrence Livermore National Security, LLC and other
 # Spack Project Developers. See the top-level COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)