diff --git a/README.md b/README.md
index c38222ab..df363efb 100644
--- a/README.md
+++ b/README.md
@@ -310,6 +310,7 @@ But if you wish to select or exclude specific linters, we give you full control
 | **NATURAL_LANGUAGE_CONFIG_FILE**                | `.textlintrc`                   | Filename for [textlint configuration](https://textlint.github.io/docs/getting-started.html#configuration) (ex: `.textlintrc`)                                                                                        |
 | **PERL_PERLCRITIC_OPTIONS**                     | `null`                          | Additional arguments to pass to the command-line when running **perlcritic** (Example: --theme community)                                                                                                            |
 | **PHP_CONFIG_FILE**                             | `php.ini`                       | Filename for [PHP Configuration](https://www.php.net/manual/en/configuration.file.php) (ex: `php.ini`)                                                                                                               |
+| **PHP_PHPCS_FILE_NAME**                         | `phpcs.xml`                     | Filename for [PHP CodeSniffer](https://github.com/squizlabs/PHP_CodeSniffer) (ex: `.phpcs.xml`, `.phpcs.xml.dist`) |
 | **PROTOBUF_CONFIG_FILE**                        | `.protolintrc.yml`              | Filename for [protolint configuration](https://github.com/yoheimuta/protolint/blob/master/_example/config/.protolint.yaml) (ex: `.protolintrc.yml`)                                                                  |
 | **PYTHON_BLACK_CONFIG_FILE**                    | `.python-black`                 | Filename for [black configuration](https://github.com/psf/black/blob/main/docs/guides/using_black_with_other_tools.md#black-compatible-configurations) (ex: `.isort.cfg`, `pyproject.toml`)                          |
 | **PYTHON_FLAKE8_CONFIG_FILE**                   | `.flake8`                       | Filename for [flake8 configuration](https://flake8.pycqa.org/en/latest/user/configuration.html) (ex: `.flake8`, `tox.ini`)                                                                                           |
diff --git a/lib/linter.sh b/lib/linter.sh
index f2a8a36c..52786354 100755
--- a/lib/linter.sh
+++ b/lib/linter.sh
@@ -160,7 +160,7 @@ PERL_PERLCRITIC_OPTIONS="${PERL_PERLCRITIC_OPTIONS:-null}"
 # shellcheck disable=SC2034  # Variable is referenced indirectly
 PHP_BUILTIN_FILE_NAME="${PHP_CONFIG_FILE:-php.ini}"
 # shellcheck disable=SC2034  # Variable is referenced indirectly
-PHP_PHPCS_FILE_NAME="phpcs.xml"
+PHP_PHPCS_FILE_NAME="${PHP_PHPCS_FILE_NAME:-phpcs.xml}"
 # shellcheck disable=SC2034  # Variable is referenced indirectly
 PHP_PHPSTAN_FILE_NAME="phpstan.neon"
 # shellcheck disable=SC2034  # Variable is referenced indirectly