diff --git a/tests/trestle/core/jinja/filters_test.py b/tests/trestle/core/jinja/filters_test.py
index c3d003702..24848bf24 100644
--- a/tests/trestle/core/jinja/filters_test.py
+++ b/tests/trestle/core/jinja/filters_test.py
@@ -1,6 +1,6 @@
 # -*- mode:python; coding:utf-8 -*-
 
-# Copyright (c) 2020 IBM Corp. All rights reserved.
+# Copyright (c) 2024 The OSCAL Compass Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/trestle/core/jinja/__init__.py b/trestle/core/jinja/__init__.py
index 71cf47259..348baa8dc 100644
--- a/trestle/core/jinja/__init__.py
+++ b/trestle/core/jinja/__init__.py
@@ -1,6 +1,6 @@
 # -*- mode:python; coding:utf-8 -*-
 
-# Copyright (c) 2021 IBM Corp. All rights reserved.
+# Copyright (c) 2024 The OSCAL Compass Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/trestle/core/jinja/base.py b/trestle/core/jinja/base.py
index 510b4a1d6..6bccc7bc3 100644
--- a/trestle/core/jinja/base.py
+++ b/trestle/core/jinja/base.py
@@ -1,6 +1,6 @@
 # -*- mode:python; coding:utf-8 -*-
 
-# Copyright (c) 2021 IBM Corp. All rights reserved.
+# Copyright (c) 2024 The OSCAL Compass Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/trestle/core/jinja/ext.py b/trestle/core/jinja/ext.py
index 22a175dc9..09795b118 100644
--- a/trestle/core/jinja/ext.py
+++ b/trestle/core/jinja/ext.py
@@ -1,6 +1,6 @@
 # -*- mode:python; coding:utf-8 -*-
 
-# Copyright (c) 2021 IBM Corp. All rights reserved.
+# Copyright (c) 2024 The OSCAL Compass Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/trestle/core/jinja/filters.py b/trestle/core/jinja/filters.py
index 74c28d19d..574281999 100644
--- a/trestle/core/jinja/filters.py
+++ b/trestle/core/jinja/filters.py
@@ -1,6 +1,6 @@
 # -*- mode:python; coding:utf-8 -*-
 
-# Copyright (c) 2020 IBM Corp. All rights reserved.
+# Copyright (c) 2024 The OSCAL Compass Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/trestle/core/plugins.py b/trestle/core/plugins.py
index 3c9685c2c..80d10b512 100644
--- a/trestle/core/plugins.py
+++ b/trestle/core/plugins.py
@@ -1,5 +1,6 @@
 # -*- mode:python; coding:utf-8 -*-
-# Copyright (c) 2020 IBM Corp. All rights reserved.
+
+# Copyright (c) 2024 The OSCAL Compass Authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.