diff --git a/COPYRIGHT b/COPYRIGHT
index f806bfd29..af17fa80e 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -7,6 +7,9 @@ or http://www.apache.org/licenses/LICENSE-2.0).
 Copyrights and patents in the Benchpark project are retained by contributors.
 No copyright assignment is required to contribute to Benchpark.
 
+Benchpark is derived from Ramble and Spack.
+Ramble: https://github.com/GoogleCloudPlatform/ramble
+Spack: https://github.com/spack/spack
 
 SPDX usage
 ------------
diff --git a/lib/benchpark/cmd/experiment.py b/lib/benchpark/cmd/experiment.py
index 1a1ce440a..6d42e8663 100644
--- a/lib/benchpark/cmd/experiment.py
+++ b/lib/benchpark/cmd/experiment.py
@@ -1,6 +1,8 @@
 # Copyright 2023 Lawrence Livermore National Security, LLC and other
 # Benchpark Project Developers. See the top-level COPYRIGHT file for details.
 #
+# Copyright 2013-2023 Spack Project Developers.
+#
 # SPDX-License-Identifier: Apache-2.0
 
 import os
diff --git a/lib/benchpark/cmd/setup.py b/lib/benchpark/cmd/setup.py
index eafd24372..599afab76 100644
--- a/lib/benchpark/cmd/setup.py
+++ b/lib/benchpark/cmd/setup.py
@@ -1,6 +1,8 @@
 # Copyright 2023 Lawrence Livermore National Security, LLC and other
 # Benchpark Project Developers. See the top-level COPYRIGHT file for details.
 #
+# Copyright 2013-2023 Spack Project Developers.
+#
 # SPDX-License-Identifier: Apache-2.0
 
 import os
diff --git a/lib/benchpark/cmd/system.py b/lib/benchpark/cmd/system.py
index 9c7e9e600..f64df96be 100644
--- a/lib/benchpark/cmd/system.py
+++ b/lib/benchpark/cmd/system.py
@@ -1,6 +1,8 @@
 # Copyright 2023 Lawrence Livermore National Security, LLC and other
 # Benchpark Project Developers. See the top-level COPYRIGHT file for details.
 #
+# Copyright 2013-2023 Spack Project Developers.
+#
 # SPDX-License-Identifier: Apache-2.0
 
 import os
diff --git a/lib/benchpark/directives.py b/lib/benchpark/directives.py
index 4806c41db..96e0281fd 100644
--- a/lib/benchpark/directives.py
+++ b/lib/benchpark/directives.py
@@ -1,6 +1,10 @@
 # Copyright 2023 Lawrence Livermore National Security, LLC and other
 # Benchpark Project Developers. See the top-level COPYRIGHT file for details.
 #
+# Copyright 2022-2024 The Ramble Authors
+#
+# Copyright 2013-2024 Spack Project Developers
+#
 # SPDX-License-Identifier: Apache-2.0
 
 import collections.abc
diff --git a/lib/benchpark/repo.py b/lib/benchpark/repo.py
index a413b47bf..9f386a643 100644
--- a/lib/benchpark/repo.py
+++ b/lib/benchpark/repo.py
@@ -1,10 +1,9 @@
+# Copyright 2023 Lawrence Livermore National Security, LLC and other
+# Benchpark Project Developers. See the top-level COPYRIGHT file for details.
+#
 # Copyright 2022-2024 The Ramble Authors
 #
-# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-# https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-# <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-# option. This file may not be copied, modified, or distributed
-# except according to those terms.
+# SPDX-License-Identifier: Apache-2.0
 
 import sys
 import contextlib
diff --git a/lib/benchpark/runtime.py b/lib/benchpark/runtime.py
index 74638dd77..1e4fc86dd 100644
--- a/lib/benchpark/runtime.py
+++ b/lib/benchpark/runtime.py
@@ -1,3 +1,7 @@
+# Copyright 2023 Lawrence Livermore National Security, LLC and other
+# Benchpark Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: Apache-2.0
 from contextlib import contextmanager
 import os
 import pathlib
diff --git a/lib/benchpark/spec.py b/lib/benchpark/spec.py
index 7120cf523..eaae9999d 100644
--- a/lib/benchpark/spec.py
+++ b/lib/benchpark/spec.py
@@ -1,3 +1,10 @@
+# Copyright 2023 Lawrence Livermore National Security, LLC and other
+# Benchpark Project Developers. See the top-level COPYRIGHT file for details.
+#
+# Copyright 2013-2024 Spack project developers
+#
+# SPDX-License-Identifier: Apache-2.0
+
 import enum
 import pathlib
 import re
diff --git a/lib/benchpark/system.py b/lib/benchpark/system.py
index 945b6e4f9..9fb1982e6 100644
--- a/lib/benchpark/system.py
+++ b/lib/benchpark/system.py
@@ -1,3 +1,6 @@
+# Copyright 2023 Lawrence Livermore National Security, LLC and other
+# Benchpark Project Developers. See the top-level COPYRIGHT file for details.
+#
 # SPDX-License-Identifier: Apache-2.0
 
 import hashlib
diff --git a/lib/benchpark/variant.py b/lib/benchpark/variant.py
index 2c9acdace..e00e115b1 100644
--- a/lib/benchpark/variant.py
+++ b/lib/benchpark/variant.py
@@ -1,3 +1,9 @@
+# Copyright 2023 Lawrence Livermore National Security, LLC and other
+# Benchpark Project Developers. See the top-level COPYRIGHT file for details.
+#
+# Copyright 2013-2024 Spack project developers
+#
+# SPDX-License-Identifier: Apache-2.0
 import inspect
 
 
diff --git a/lib/main.py b/lib/main.py
index 01d70f317..32a5c98db 100755
--- a/lib/main.py
+++ b/lib/main.py
@@ -1,6 +1,8 @@
 # Copyright 2023 Lawrence Livermore National Security, LLC and other
 # Benchpark Project Developers. See the top-level COPYRIGHT file for details.
 #
+# Copyright 2013-2024 Spack project developers
+#
 # SPDX-License-Identifier: Apache-2.0
 
 import argparse