diff --git a/.github/problem-matchers/README.md b/.github/problem-matchers/README.md
index 986510da9a2..93dd1600356 100644
--- a/.github/problem-matchers/README.md
+++ b/.github/problem-matchers/README.md
@@ -12,24 +12,32 @@ in the [`workflows`](./workflows) subdirectory.
 
 ## Original sources
 
-The following problem matcher JSON files found in this directory were copied
+The Pylint and YAML file problem matchers found in this directory were copied
 from the [Home Assistant](https://github.com/home-assistant/core) project on
 GitHub. The Home Assistant project is licensed under the Apache 2.0 open-source
 license. The version of the files at the time they were copied was 2025.1.2.
 
-- [`pylint.json`](https://github.com/home-assistant/core/blob/dev/.github/workflows/matchers/pylint.json)
-- [`yamllint.json`](https://github.com/home-assistant/core/blob/dev/.github/workflows/matchers/yamllint.json)
-- [`mypy.json`](https://github.com/home-assistant/core/blob/dev/.github/workflows/matchers/pypy.json)
+-   [`pylint.json`](https://github.com/home-assistant/core/blob/dev/.github/workflows/matchers/pylint.json)
+-   [`yamllint.json`](https://github.com/home-assistant/core/blob/dev/.github/workflows/matchers/yamllint.json)
+
+The Mypy and Pytest problem matchers files originally came from the
+[gh-problem-matcher-wrap](https://github.com/liskin/gh-problem-matcher-wrap/tree/master/problem-matchers)
+repository (copied 2025-03-04, version 3.0.0), and were subsequently modified by
+Michael Hucka. The original JSON files are Copyright © 2020 Tomáš Janoušek and
+made available under the terms of the MIT license.
+
+-   [`mypy.json`](https://github.com/liskin/gh-problem-matcher-wrap/blob/master/problem-matchers/mypy.json)
+-   [`pytest.json`](https://github.com/liskin/gh-problem-matcher-wrap/blob/master/problem-matchers/pytest.json)
 
 The following problem matcher for Black came from a fork of the
 [MLflow](https://github.com/mlflow/mlflow) project by user Sumanth077 on GitHub.
 The MLflow project is licensed under the Apache 2.0 open-source license. The
 version of the file copied was dated 2022-05-29.
 
-- [`black.json`](https://github.com/Sumanth077/mlflow/blob/problem-matcher-for-black/.github/workflows/matchers/black.json)
+-   [`black.json`](https://github.com/Sumanth077/mlflow/blob/problem-matcher-for-black/.github/workflows/matchers/black.json)
 
 The Shellcheck problem matcher JSON file came from the
 [shellcheck-problem-matchers](uhttps://github.com/lumaxis/shellcheck-problem-matchers)
 repository (copied 2025-02-26, version v2.1.0).
 
-- [`shellcheck-tty.json`](https://github.com/lumaxis/shellcheck-problem-matchers/blob/main/.github/shellcheck-tty.json)
+-   [`shellcheck-tty.json`](https://github.com/lumaxis/shellcheck-problem-matchers/blob/main/.github/shellcheck-tty.json)