diff --git a/pyproject.toml b/pyproject.toml
index dc52036..1d8f70f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,6 +38,8 @@ select = [
     "UP",
 ]
 ignore = [
+    # We do this deliberately when extending modules with functionality
+    "A005",
     # Not available in all supported Python versions
     "B905",
     # Black will handle this
diff --git a/requirements-check.txt b/requirements-check.txt
index eadca37..aaacaf9 100644
--- a/requirements-check.txt
+++ b/requirements-check.txt
@@ -1,4 +1,4 @@
-ruff==0.8.6
+ruff==0.9.1
 black==24.10.0
 isort==5.13.2
 mypy==1.13.0