diff --git a/.pre-commit-hooks.yaml b/.pre-commit-hooks.yaml
new file mode 100644
index 0000000..0873f03
--- /dev/null
+++ b/.pre-commit-hooks.yaml
@@ -0,0 +1,6 @@
+- id: yaml-shellcheck
+  name: yaml-shellcheck v1.1.0
+  description: Wrapper script to run shellcheck on YAML CI-config files
+  language: python
+  entry: yaml_shellcheck
+  types: [text]
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..ebe346b
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,18 @@
+[tool.poetry]
+name = "yaml-shellcheck"
+version = "1.1.0"
+description = "Wrapper script to run shellcheck on YAML CI-config files"
+authors = ["Martin Schütte <info@mschuette.name>"]
+readme = "README.md"
+
+[tool.poetry.dependencies]
+python = ">=3.8,<4"
+"ruamel.yaml" = "0.16.0"
+
+[tool.poetry.scripts]
+yaml_shellcheck = "yaml_shellcheck:main"
+
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"
diff --git a/yaml_shellcheck.py b/yaml_shellcheck.py
index 898767b..f38aaee 100755
--- a/yaml_shellcheck.py
+++ b/yaml_shellcheck.py
@@ -418,7 +418,7 @@ def cleanup_files(args):
         logger.debug("removed working dir %s", args.outdir)
 
 
-if __name__ == "__main__":
+def main():
     args = setup()
 
     filenames = []
@@ -434,3 +434,7 @@ def cleanup_files(args):
     cleanup_files(args)
     # exit with shellcheck exit code
     sys.exit(check_proc_result.returncode if check_proc_result else 0)
+
+
+if __name__ == "__main__":
+    main()