diff --git a/benchmarks/conftest.py b/benchmarks/conftest.py
index 7f280d85b..381bd5670 100644
--- a/benchmarks/conftest.py
+++ b/benchmarks/conftest.py
@@ -5,10 +5,8 @@ The number of nodes is parameterized via a --number-of-nodes CLI option added
 to pytest.
 """
 
-from os.path import abspath
 from shutil import which, rmtree
 from tempfile import mkdtemp
-from pathlib import Path
 from contextlib import contextmanager
 from time import time
 
diff --git a/tox.ini b/tox.ini
index 67a089b0c..a736a7af1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -109,7 +109,7 @@ passenv = HOME
 setenv =
 	 # If no positional arguments are given, try to run the checks on the
 	 # entire codebase, including various pieces of supporting code.
-	 DEFAULT_FILES=src integration static misc setup.py
+	 DEFAULT_FILES=src integration benchmarks static misc setup.py
 commands =
          ruff check {posargs:{env:DEFAULT_FILES}}
          python misc/coding_tools/check-umids.py {posargs:{env:DEFAULT_FILES}}