diff --git a/examples/__init__.py b/examples/__init__.py
index 1f63eb496..c556ae14f 100644
--- a/examples/__init__.py
+++ b/examples/__init__.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2020 Yash Varshney
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/examples/tv_to_rdf.py b/examples/tv_to_rdf.py
index db890961e..d73c80ce5 100755
--- a/examples/tv_to_rdf.py
+++ b/examples/tv_to_rdf.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # Copyright (C) 2017 BMW AG
 # Author: Thomas Hafner
-#
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/annotation.py b/spdx/annotation.py
index 51cff82d9..7e4b0fefa 100644
--- a/spdx/annotation.py
+++ b/spdx/annotation.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2018 Yash M. Nisar
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/checksum.py b/spdx/checksum.py
index 634a59ad5..73bb79de3 100644
--- a/spdx/checksum.py
+++ b/spdx/checksum.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/cli_tools/__init__.py b/spdx/cli_tools/__init__.py
index 1f63eb496..c556ae14f 100644
--- a/spdx/cli_tools/__init__.py
+++ b/spdx/cli_tools/__init__.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2020 Yash Varshney
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/cli_tools/convertor.py b/spdx/cli_tools/convertor.py
index 04e96af72..261ba1c14 100644
--- a/spdx/cli_tools/convertor.py
+++ b/spdx/cli_tools/convertor.py
@@ -1,6 +1,7 @@
 #!/usr/bin/env python
 
 # Copyright (c) 2020 Yash Varshney
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/cli_tools/parser.py b/spdx/cli_tools/parser.py
index aad96d1c2..e458b6e3e 100755
--- a/spdx/cli_tools/parser.py
+++ b/spdx/cli_tools/parser.py
@@ -1,6 +1,7 @@
 #!/usr/bin/env python
 
 # Copyright (c) 2020 Yash Varshney
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/config.py b/spdx/config.py
index a10582043..0eb2efed1 100644
--- a/spdx/config.py
+++ b/spdx/config.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/creationinfo.py b/spdx/creationinfo.py
index eca9cbe37..6e71c2e90 100644
--- a/spdx/creationinfo.py
+++ b/spdx/creationinfo.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/document.py b/spdx/document.py
index 3175df40e..e610a5081 100644
--- a/spdx/document.py
+++ b/spdx/document.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/file.py b/spdx/file.py
index bab50e2ad..d63e40e06 100644
--- a/spdx/file.py
+++ b/spdx/file.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/license.py b/spdx/license.py
index ea973f5fd..08fc596fe 100644
--- a/spdx/license.py
+++ b/spdx/license.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2022 spdx contributors
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/package.py b/spdx/package.py
index 93b62e2cd..4e96e1b53 100644
--- a/spdx/package.py
+++ b/spdx/package.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/parsers/__init__.py b/spdx/parsers/__init__.py
index 588b404ec..1d59a27e0 100644
--- a/spdx/parsers/__init__.py
+++ b/spdx/parsers/__init__.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/parsers/builderexceptions.py b/spdx/parsers/builderexceptions.py
index fe03f8d51..b70aa93de 100644
--- a/spdx/parsers/builderexceptions.py
+++ b/spdx/parsers/builderexceptions.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/parsers/jsonparser.py b/spdx/parsers/jsonparser.py
index 5436a6798..d9e404cce 100644
--- a/spdx/parsers/jsonparser.py
+++ b/spdx/parsers/jsonparser.py
@@ -1,4 +1,5 @@
 # Copyright (c) Xavier Figueroa
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/parsers/jsonyamlxml.py b/spdx/parsers/jsonyamlxml.py
index 5d27ae9a9..0220c69c1 100644
--- a/spdx/parsers/jsonyamlxml.py
+++ b/spdx/parsers/jsonyamlxml.py
@@ -1,4 +1,5 @@
 # Copyright (c) Xavier Figueroa
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/parsers/jsonyamlxmlbuilders.py b/spdx/parsers/jsonyamlxmlbuilders.py
index 94d464edc..306b84990 100644
--- a/spdx/parsers/jsonyamlxmlbuilders.py
+++ b/spdx/parsers/jsonyamlxmlbuilders.py
@@ -1,4 +1,5 @@
 # Copyright (c) Xavier Figueroa
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/parsers/lexers/tagvalue.py b/spdx/parsers/lexers/tagvalue.py
index deafd7186..5368587db 100644
--- a/spdx/parsers/lexers/tagvalue.py
+++ b/spdx/parsers/lexers/tagvalue.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/parsers/loggers.py b/spdx/parsers/loggers.py
index a74715f77..c22acb120 100644
--- a/spdx/parsers/loggers.py
+++ b/spdx/parsers/loggers.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/parsers/parse_anything.py b/spdx/parsers/parse_anything.py
index 906337fff..523caebbe 100644
--- a/spdx/parsers/parse_anything.py
+++ b/spdx/parsers/parse_anything.py
@@ -1,4 +1,5 @@
 # Copyright (c) spdx contributors
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/parsers/rdf.py b/spdx/parsers/rdf.py
index 94841127d..9580ed02a 100644
--- a/spdx/parsers/rdf.py
+++ b/spdx/parsers/rdf.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/parsers/rdfbuilders.py b/spdx/parsers/rdfbuilders.py
index c7845ae4d..cc5afdf84 100644
--- a/spdx/parsers/rdfbuilders.py
+++ b/spdx/parsers/rdfbuilders.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/parsers/tagvalue.py b/spdx/parsers/tagvalue.py
index 8a3b0d170..23b71779a 100644
--- a/spdx/parsers/tagvalue.py
+++ b/spdx/parsers/tagvalue.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/parsers/tagvaluebuilders.py b/spdx/parsers/tagvaluebuilders.py
index f99fde3e8..77c98d9e8 100644
--- a/spdx/parsers/tagvaluebuilders.py
+++ b/spdx/parsers/tagvaluebuilders.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/parsers/validations.py b/spdx/parsers/validations.py
index f93112306..f910795f3 100644
--- a/spdx/parsers/validations.py
+++ b/spdx/parsers/validations.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/parsers/xmlparser.py b/spdx/parsers/xmlparser.py
index d57d8175e..58b8befc4 100644
--- a/spdx/parsers/xmlparser.py
+++ b/spdx/parsers/xmlparser.py
@@ -1,4 +1,5 @@
 # Copyright (c) Xavier Figueroa
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/parsers/yamlparser.py b/spdx/parsers/yamlparser.py
index 1130e1ca7..a624d6085 100644
--- a/spdx/parsers/yamlparser.py
+++ b/spdx/parsers/yamlparser.py
@@ -1,4 +1,5 @@
 # Copyright (c) Xavier Figueroa
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/relationship.py b/spdx/relationship.py
index 5eaa62fa3..9fbceec86 100644
--- a/spdx/relationship.py
+++ b/spdx/relationship.py
@@ -1,5 +1,5 @@
 # Copyright (c) 2020 Yash Varshney
-
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/review.py b/spdx/review.py
index 42c4982ee..deec8b705 100644
--- a/spdx/review.py
+++ b/spdx/review.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/snippet.py b/spdx/snippet.py
index cd79e3b55..1129c4ad3 100644
--- a/spdx/snippet.py
+++ b/spdx/snippet.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2018 Yash M. Nisar
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/utils.py b/spdx/utils.py
index 3695cd0bd..ebce59285 100644
--- a/spdx/utils.py
+++ b/spdx/utils.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/version.py b/spdx/version.py
index 8be8e7ddc..dae2ffe6b 100644
--- a/spdx/version.py
+++ b/spdx/version.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/writers/json.py b/spdx/writers/json.py
index a2b226fdf..745b5b5e0 100644
--- a/spdx/writers/json.py
+++ b/spdx/writers/json.py
@@ -1,4 +1,5 @@
 # Copyright (c) Xavier Figueroa
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/writers/jsonyamlxml.py b/spdx/writers/jsonyamlxml.py
index d36e21112..bb4bd44e3 100644
--- a/spdx/writers/jsonyamlxml.py
+++ b/spdx/writers/jsonyamlxml.py
@@ -1,4 +1,5 @@
 # Copyright (c) Xavier Figueroa
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/writers/rdf.py b/spdx/writers/rdf.py
index 7e2b898f7..6622072be 100644
--- a/spdx/writers/rdf.py
+++ b/spdx/writers/rdf.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/writers/tagvalue.py b/spdx/writers/tagvalue.py
index dca2b2a17..66ed212c8 100644
--- a/spdx/writers/tagvalue.py
+++ b/spdx/writers/tagvalue.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/writers/write_anything.py b/spdx/writers/write_anything.py
index 63a4f4c3b..94ed8f06a 100644
--- a/spdx/writers/write_anything.py
+++ b/spdx/writers/write_anything.py
@@ -1,4 +1,5 @@
 # Copyright (c) spdx contributors
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/writers/xml.py b/spdx/writers/xml.py
index 14bbd4b99..3e280eece 100644
--- a/spdx/writers/xml.py
+++ b/spdx/writers/xml.py
@@ -1,4 +1,5 @@
 # Copyright (c) the SPDX tools authors
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/spdx/writers/yaml.py b/spdx/writers/yaml.py
index 2ccc6884d..37092d309 100644
--- a/spdx/writers/yaml.py
+++ b/spdx/writers/yaml.py
@@ -1,4 +1,5 @@
 # Copyright (c) Xavier Figueroa
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/tests/test_builder.py b/tests/test_builder.py
index 50c6cf7f4..bf72626e5 100644
--- a/tests/test_builder.py
+++ b/tests/test_builder.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/tests/test_checksum.py b/tests/test_checksum.py
index befba2033..b484e7441 100644
--- a/tests/test_checksum.py
+++ b/tests/test_checksum.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2022 spdx contributors
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/tests/test_cli_convertor.py b/tests/test_cli_convertor.py
index 11413b933..00b2e0482 100644
--- a/tests/test_cli_convertor.py
+++ b/tests/test_cli_convertor.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2022 spdx tool contributors
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/tests/test_config.py b/tests/test_config.py
index 28dab95b3..940f858e7 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -1,5 +1,5 @@
-
 # Copyright (c) the SPDX tools authors
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/tests/test_conversion.py b/tests/test_conversion.py
index 4d61300d1..793d1951d 100644
--- a/tests/test_conversion.py
+++ b/tests/test_conversion.py
@@ -1,5 +1,5 @@
-
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/tests/test_creationinfo.py b/tests/test_creationinfo.py
index 16201829c..ed8048bcf 100644
--- a/tests/test_creationinfo.py
+++ b/tests/test_creationinfo.py
@@ -1,5 +1,5 @@
-
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/tests/test_document.py b/tests/test_document.py
index 85167ae4b..949014917 100644
--- a/tests/test_document.py
+++ b/tests/test_document.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/tests/test_error_messages.py b/tests/test_error_messages.py
index fa57f136a..9c6141e4d 100644
--- a/tests/test_error_messages.py
+++ b/tests/test_error_messages.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2021 spdx tool contributors
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/tests/test_jsonyamlxml_parser.py b/tests/test_jsonyamlxml_parser.py
index 4198b8eff..5a1c2d1d0 100644
--- a/tests/test_jsonyamlxml_parser.py
+++ b/tests/test_jsonyamlxml_parser.py
@@ -1,5 +1,5 @@
-
 # Copyright (c) Xavier Figueroa
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/tests/test_package.py b/tests/test_package.py
index 3b8325b02..6b97ea7ff 100644
--- a/tests/test_package.py
+++ b/tests/test_package.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/tests/test_parse_anything.py b/tests/test_parse_anything.py
index c133f9b0b..f40a0bec1 100644
--- a/tests/test_parse_anything.py
+++ b/tests/test_parse_anything.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2021 spdx tool contributors
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/tests/test_parsers_validation.py b/tests/test_parsers_validation.py
index 4795fb6d5..3d1460b31 100644
--- a/tests/test_parsers_validation.py
+++ b/tests/test_parsers_validation.py
@@ -1,5 +1,5 @@
-
 # Copyright (c) SPDX Python tools authors
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/tests/test_rdf_parser.py b/tests/test_rdf_parser.py
index 7963781fa..6d581b6dd 100644
--- a/tests/test_rdf_parser.py
+++ b/tests/test_rdf_parser.py
@@ -1,5 +1,5 @@
-
 # Copyright (c) the SPDX tools authors
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/tests/test_tag_value_parser.py b/tests/test_tag_value_parser.py
index 2c5ad293b..c883c2d37 100644
--- a/tests/test_tag_value_parser.py
+++ b/tests/test_tag_value_parser.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2014 Ahmed H. Ismail
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/tests/test_write_anything.py b/tests/test_write_anything.py
index 5f3c8b915..bbfde4628 100644
--- a/tests/test_write_anything.py
+++ b/tests/test_write_anything.py
@@ -1,4 +1,5 @@
 # Copyright (c) 2021 spdx tool contributors
+# SPDX-License-Identifier: Apache-2.0
 # 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
diff --git a/tests/testing_utils.py b/tests/testing_utils.py
index 825276545..0e38221a9 100644
--- a/tests/testing_utils.py
+++ b/tests/testing_utils.py
@@ -3,6 +3,7 @@
 # https://raw.githubusercontent.com/nose-devs/nose/7c26ad1e6b7d308cafa328ad34736d34028c122a/nose/tools/nontrivial.py
 # Copyright (c) 2005-2009 Jason Pellerin and others.
 #
+# SPDX-License-Identifier: GPL-2.0-or-later
 # This program is free software; you can redistribute it and/or modify it under the
 # terms of the GNU Lesser General Public License as published by the Free Software
 # Foundation; either version 2 of the License, or (at your option) any later version.
diff --git a/tests/utils_test.py b/tests/utils_test.py
index c1a7b8abb..5e6ada81c 100644
--- a/tests/utils_test.py
+++ b/tests/utils_test.py
@@ -1,4 +1,5 @@
 # Copyright (c) the SPDX tools authors
+# SPDX-License-Identifier: Apache-2.0
 # 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