diff --git a/docs/source/conf.py b/docs/source/conf.py
index 01d79b61..6c1282e1 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -1,3 +1,6 @@
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 
diff --git a/examples/multi-env-files/print_version.py b/examples/multi-env-files/print_version.py
index 3ccb076f..0684e547 100644
--- a/examples/multi-env-files/print_version.py
+++ b/examples/multi-env-files/print_version.py
@@ -1,3 +1,6 @@
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 
diff --git a/examples/multi-env-files/test_get_version.py b/examples/multi-env-files/test_get_version.py
index 2b1ea48a..fdc66c84 100644
--- a/examples/multi-env-files/test_get_version.py
+++ b/examples/multi-env-files/test_get_version.py
@@ -1,3 +1,6 @@
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 
diff --git a/scripts/ap-to-cp.py b/scripts/ap-to-cp.py
index c1de333a..08a35146 100644
--- a/scripts/ap-to-cp.py
+++ b/scripts/ap-to-cp.py
@@ -1,3 +1,6 @@
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 
diff --git a/src/conda_project/__init__.py b/src/conda_project/__init__.py
index 1d6ec8f3..bb4b11b5 100644
--- a/src/conda_project/__init__.py
+++ b/src/conda_project/__init__.py
@@ -1,4 +1,7 @@
 # -*- coding: utf-8 -*-
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 
diff --git a/src/conda_project/__main__.py b/src/conda_project/__main__.py
index 3b142c7b..b791c998 100644
--- a/src/conda_project/__main__.py
+++ b/src/conda_project/__main__.py
@@ -1,4 +1,7 @@
 # -*- coding: utf-8 -*-
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 from .cli.main import main
diff --git a/src/conda_project/cli/__init__.py b/src/conda_project/cli/__init__.py
index bdb866bf..1f554a22 100644
--- a/src/conda_project/cli/__init__.py
+++ b/src/conda_project/cli/__init__.py
@@ -1,3 +1,6 @@
 # -*- coding: utf-8 -*-
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
diff --git a/src/conda_project/cli/commands.py b/src/conda_project/cli/commands.py
index 923e70cc..ac5e8bbb 100644
--- a/src/conda_project/cli/commands.py
+++ b/src/conda_project/cli/commands.py
@@ -1,4 +1,7 @@
 # -*- coding: utf-8 -*-
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 import logging
diff --git a/src/conda_project/cli/main.py b/src/conda_project/cli/main.py
index 83a0db6f..d576d701 100644
--- a/src/conda_project/cli/main.py
+++ b/src/conda_project/cli/main.py
@@ -1,4 +1,7 @@
 # -*- coding: utf-8 -*-
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 from __future__ import annotations
diff --git a/src/conda_project/conda.py b/src/conda_project/conda.py
index 7bc83f01..c5b93676 100644
--- a/src/conda_project/conda.py
+++ b/src/conda_project/conda.py
@@ -1,4 +1,7 @@
 # -*- coding: utf-8 -*-
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 from __future__ import annotations
diff --git a/src/conda_project/exceptions.py b/src/conda_project/exceptions.py
index 5fc8a718..007f4af8 100644
--- a/src/conda_project/exceptions.py
+++ b/src/conda_project/exceptions.py
@@ -1,4 +1,7 @@
 # -*- coding: utf-8 -*-
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 
diff --git a/src/conda_project/project_file.py b/src/conda_project/project_file.py
index cf789531..3d356b0d 100644
--- a/src/conda_project/project_file.py
+++ b/src/conda_project/project_file.py
@@ -1,3 +1,6 @@
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2024 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 from __future__ import annotations
diff --git a/src/conda_project/utils.py b/src/conda_project/utils.py
index 7b440cbc..474cfcb9 100644
--- a/src/conda_project/utils.py
+++ b/src/conda_project/utils.py
@@ -1,3 +1,6 @@
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 
diff --git a/tests/__init__.py b/tests/__init__.py
index bdb866bf..1f554a22 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -1,3 +1,6 @@
 # -*- coding: utf-8 -*-
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
diff --git a/tests/conftest.py b/tests/conftest.py
index 67e8767d..b69204b9 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,3 +1,6 @@
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2024 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 
diff --git a/tests/test_archive.py b/tests/test_archive.py
index a2bfa35d..41205ac8 100644
--- a/tests/test_archive.py
+++ b/tests/test_archive.py
@@ -1,3 +1,6 @@
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 6e494216..921a663d 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -1,4 +1,7 @@
 # -*- coding: utf-8 -*-
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 from argparse import Namespace
diff --git a/tests/test_commands.py b/tests/test_commands.py
index fc82e3f1..4beb525c 100644
--- a/tests/test_commands.py
+++ b/tests/test_commands.py
@@ -1,4 +1,7 @@
 # -*- coding: utf-8 -*-
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 import os
diff --git a/tests/test_conda.py b/tests/test_conda.py
index 6f45c2bd..39e1395c 100644
--- a/tests/test_conda.py
+++ b/tests/test_conda.py
@@ -1,4 +1,7 @@
 # -*- coding: utf-8 -*-
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 
diff --git a/tests/test_dependencies.py b/tests/test_dependencies.py
index 81df4a58..8a3b2e9d 100644
--- a/tests/test_dependencies.py
+++ b/tests/test_dependencies.py
@@ -1,3 +1,6 @@
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 
diff --git a/tests/test_init.py b/tests/test_init.py
index 023f1449..102038e4 100644
--- a/tests/test_init.py
+++ b/tests/test_init.py
@@ -1,3 +1,6 @@
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 import logging
diff --git a/tests/test_install.py b/tests/test_install.py
index 2cfd9300..748fe86a 100644
--- a/tests/test_install.py
+++ b/tests/test_install.py
@@ -1,3 +1,6 @@
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 
diff --git a/tests/test_project.py b/tests/test_project.py
index 9d48279c..91347a87 100644
--- a/tests/test_project.py
+++ b/tests/test_project.py
@@ -1,4 +1,7 @@
 # -*- coding: utf-8 -*-
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2024 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 
diff --git a/tests/test_project_file.py b/tests/test_project_file.py
index 73a895ff..68d99fa8 100644
--- a/tests/test_project_file.py
+++ b/tests/test_project_file.py
@@ -1,3 +1,6 @@
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause
 
diff --git a/tests/test_utils.py b/tests/test_utils.py
index e4ca04c8..744bb22b 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -1,3 +1,6 @@
+# Copyright (C) 2022-2024 Anaconda, Inc
+# SPDX-License-Identifier: BSD-3-Clause
+
 # Copyright (C) 2022 Anaconda, Inc
 # SPDX-License-Identifier: BSD-3-Clause