diff --git a/pyproject.toml b/pyproject.toml
index 77b722d..82e06b7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,6 +44,8 @@ lint.extend-ignore = [
   "S101", #  Allow use of `assert`.
 ]
 
+lint.per-file-ignores."responder/util/cmd.py" = [ "A005" ] # Module shadows a Python standard-library module
+
 lint.per-file-ignores."tests/*" = [
   "ERA001", # Found commented-out code.
   "S101",   # Allow use of `assert`, and `print`.
@@ -69,20 +71,6 @@ markers = [
 ]
 xfail_strict = true
 
-[tool.mypy]
-packages = [
-  "responder",
-]
-exclude = [
-]
-check_untyped_defs = true
-explicit_package_bases = true
-ignore_missing_imports = true
-implicit_optional = true
-install_types = true
-namespace_packages = true
-non_interactive = true
-
 [tool.coverage.run]
 branch = false
 omit = [
@@ -98,6 +86,20 @@ exclude_lines = [
   "raise NotImplemented",
 ]
 
+[tool.mypy]
+packages = [
+  "responder",
+]
+exclude = [
+]
+check_untyped_defs = true
+explicit_package_bases = true
+ignore_missing_imports = true
+implicit_optional = true
+install_types = true
+namespace_packages = true
+non_interactive = true
+
 [tool.poe.tasks]
 
 check = [
diff --git a/responder/routes.py b/responder/routes.py
index 7a9a866..b78aeae 100644
--- a/responder/routes.py
+++ b/responder/routes.py
@@ -32,9 +32,9 @@ def compile_path(path):
     for match in PARAM_RE.finditer(path):
         param_name, convertor_type = match.groups(default="str")
         convertor_type = convertor_type.lstrip(":")
-        assert (
-            convertor_type in _CONVERTORS.keys()
-        ), f"Unknown path convertor '{convertor_type}'"
+        assert convertor_type in _CONVERTORS.keys(), (
+            f"Unknown path convertor '{convertor_type}'"
+        )
         convertor, convertor_re = _CONVERTORS[convertor_type]
 
         path_re += path[idx : match.start()]
@@ -241,9 +241,9 @@ class Router:
             return
 
         if check_existing:
-            assert not self.routes or route not in (
-                item.route for item in self.routes
-            ), f"Route '{route}' already exists"
+            assert not self.routes or route not in (item.route for item in self.routes), (
+                f"Route '{route}' already exists"
+            )
 
         if default:
             self.default_endpoint = endpoint