diff --git a/.gitignore b/.gitignore
index ddc2bd11..0f7029da 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,4 @@ venv/
 # due to using nox and pytest
 .nox
 .cache
+.pre-commit-config.yaml
\ No newline at end of file
diff --git a/README.md b/README.md
index d6c10ebb..c6a04124 100644
--- a/README.md
+++ b/README.md
@@ -37,3 +37,4 @@ may be appropriate.
 [rst]: http://docutils.sourceforge.net/rst.html
 [md]: https://tools.ietf.org/html/rfc7764#section-3.5 "CommonMark variant"
 [md use]: https://packaging.python.org/specifications/core-metadata/#description-content-type-optional
+Additionally: adhere to [PEP8](https://peps.python.org/pep-0008/) when writing code.
\ No newline at end of file
diff --git a/src/sample/__init__.py b/src/sample/__init__.py
index c8f10649..18cc4f31 100644
--- a/src/sample/__init__.py
+++ b/src/sample/__init__.py
@@ -1,3 +1,3 @@
-def main():
-    """Entry point for the application script"""
+def main() -> None:
+    """Entry point for the application script."""
     print("Call your main application code here")