diff --git a/tests/fixtures.py b/tests/fixtures.py
index 1c4d2ad3..bfbbbdb3 100644
--- a/tests/fixtures.py
+++ b/tests/fixtures.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright (C) 2020 FireEye, Inc. All Rights Reserved.
+# Copyright (C) 2020 Mandiant, Inc. All Rights Reserved.
 # Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at: [package root]/LICENSE.txt
diff --git a/tests/test_engine.py b/tests/test_engine.py
index 89c3b739..09560257 100644
--- a/tests/test_engine.py
+++ b/tests/test_engine.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2020 FireEye, Inc. All Rights Reserved.
+# Copyright (C) 2020 Mandiant, Inc. All Rights Reserved.
 # Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at: [package root]/LICENSE.txt
diff --git a/tests/test_fmt.py b/tests/test_fmt.py
index 1f37886c..96101dfb 100644
--- a/tests/test_fmt.py
+++ b/tests/test_fmt.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2020 FireEye, Inc. All Rights Reserved.
+# Copyright (C) 2020 Mandiant, Inc. All Rights Reserved.
 # Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at: [package root]/LICENSE.txt
diff --git a/tests/test_freeze.py b/tests/test_freeze.py
index 664afd44..2c5f1920 100644
--- a/tests/test_freeze.py
+++ b/tests/test_freeze.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2020 FireEye, Inc. All Rights Reserved.
+# Copyright (C) 2020 Mandiant, Inc. All Rights Reserved.
 # Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at: [package root]/LICENSE.txt
diff --git a/tests/test_helpers.py b/tests/test_helpers.py
index eab1efa4..90b689b3 100644
--- a/tests/test_helpers.py
+++ b/tests/test_helpers.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2020 FireEye, Inc. All Rights Reserved.
+# Copyright (C) 2020 Mandiant, Inc. All Rights Reserved.
 # Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at: [package root]/LICENSE.txt
diff --git a/tests/test_main.py b/tests/test_main.py
index e5b7cd08..d515c104 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright (C) 2020 FireEye, Inc. All Rights Reserved.
+# Copyright (C) 2020 Mandiant, Inc. All Rights Reserved.
 # Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at: [package root]/LICENSE.txt
diff --git a/tests/test_match.py b/tests/test_match.py
index 510db98f..fc3583f7 100644
--- a/tests/test_match.py
+++ b/tests/test_match.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2020 FireEye, Inc. All Rights Reserved.
+# Copyright (C) 2020 Mandiant, Inc. All Rights Reserved.
 # Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at: [package root]/LICENSE.txt
diff --git a/tests/test_optimizer.py b/tests/test_optimizer.py
index 69a79bd6..d07ba330 100644
--- a/tests/test_optimizer.py
+++ b/tests/test_optimizer.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2021 FireEye, Inc. All Rights Reserved.
+# Copyright (C) 2021 Mandiant, Inc. All Rights Reserved.
 # Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at: [package root]/LICENSE.txt
diff --git a/tests/test_os_detection.py b/tests/test_os_detection.py
index 82e592a7..bdc89686 100644
--- a/tests/test_os_detection.py
+++ b/tests/test_os_detection.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright (C) 2022 FireEye, Inc. All Rights Reserved.
+# Copyright (C) 2022 Mandiant, Inc. All Rights Reserved.
 # Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at: [package root]/LICENSE.txt
diff --git a/tests/test_pefile_features.py b/tests/test_pefile_features.py
index 2e1afc7b..e0b735e8 100644
--- a/tests/test_pefile_features.py
+++ b/tests/test_pefile_features.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2020 FireEye, Inc. All Rights Reserved.
+# Copyright (C) 2020 Mandiant, Inc. All Rights Reserved.
 # Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at: [package root]/LICENSE.txt
diff --git a/tests/test_result_document.py b/tests/test_result_document.py
index b98fadff..8172c601 100644
--- a/tests/test_result_document.py
+++ b/tests/test_result_document.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2020 FireEye, Inc. All Rights Reserved.
+# Copyright (C) 2020 Mandiant, Inc. All Rights Reserved.
 # Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at: [package root]/LICENSE.txt
diff --git a/tests/test_rule_cache.py b/tests/test_rule_cache.py
index fb11e5e7..b52e2577 100644
--- a/tests/test_rule_cache.py
+++ b/tests/test_rule_cache.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2023 FireEye, Inc. All Rights Reserved.
+# Copyright (C) 2023 Mandiant, Inc. All Rights Reserved.
 # Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at: [package root]/LICENSE.txt
diff --git a/tests/test_rules.py b/tests/test_rules.py
index fe154c39..29db2a2f 100644
--- a/tests/test_rules.py
+++ b/tests/test_rules.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2020 FireEye, Inc. All Rights Reserved.
+# Copyright (C) 2020 Mandiant, Inc. All Rights Reserved.
 # Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at: [package root]/LICENSE.txt
diff --git a/tests/test_rules_insn_scope.py b/tests/test_rules_insn_scope.py
index 27d07489..481b3cd9 100644
--- a/tests/test_rules_insn_scope.py
+++ b/tests/test_rules_insn_scope.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2022 FireEye, Inc. All Rights Reserved.
+# Copyright (C) 2022 Mandiant, Inc. All Rights Reserved.
 # Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at: [package root]/LICENSE.txt
diff --git a/tests/test_scripts.py b/tests/test_scripts.py
index b519f89e..f5a9d701 100644
--- a/tests/test_scripts.py
+++ b/tests/test_scripts.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2020 FireEye, Inc. All Rights Reserved.
+# Copyright (C) 2020 Mandiant, Inc. All Rights Reserved.
 # Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at: [package root]/LICENSE.txt
diff --git a/tests/test_viv_features.py b/tests/test_viv_features.py
index fa8bfda3..fcf49c84 100644
--- a/tests/test_viv_features.py
+++ b/tests/test_viv_features.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2020 FireEye, Inc. All Rights Reserved.
+# Copyright (C) 2020 Mandiant, Inc. All Rights Reserved.
 # Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at: [package root]/LICENSE.txt