diff --git a/docs/conf.py b/docs/conf.py
index 81edb15..3b25bec 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,4 +1,5 @@
-# Configuration file for the Sphinx documentation builder.
+"""Configuration file for the Sphinx documentation builder."""
+# ruff: noqa: A001
 #
 # For the full list of built-in configuration values, see the documentation:
 # https://www.sphinx-doc.org/en/master/usage/configuration.html
diff --git a/pyproject.toml b/pyproject.toml
index e211b7d..6bc8200 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -61,6 +61,9 @@ ignore = [
 ]
 
 [tool.ruff.lint.per-file-ignores]
+"docs/*" = [
+    "INP001", # implicit namespaces
+]
 "examples/*" = [
     "T201",   # use of "print"
     "S101",   # use of "assert"
@@ -71,6 +74,10 @@ ignore = [
     "T201", # use of "print"
     "D",    # documentation
 ]
+"tests/*" = [
+    "INP001",  # implicit namespaces
+    "PLC0415", # import not on top of file
+]
 
 [tool.setuptools]
 py-modules = ["findmy"]
diff --git a/tests/test_keygen.py b/tests/test_keygen.py
index 3b51e6e..cbb8b57 100644
--- a/tests/test_keygen.py
+++ b/tests/test_keygen.py
@@ -1,8 +1,11 @@
+"""Key generation tests."""
+
 import pytest
 
 
-@pytest.mark.parametrize('execution_number', range(100))
-def test_import(execution_number):
+@pytest.mark.parametrize("execution_number", range(100))
+def test_keypair(execution_number: int) -> None:  # noqa: ARG001
+    """Test generation of new keypairs."""
     import findmy
 
     kp = findmy.KeyPair.new()