diff --git a/dev/make-release-notes.py b/dev/make-release-notes.py
index 0c9882c2..0bfc0612 100755
--- a/dev/make-release-notes.py
+++ b/dev/make-release-notes.py
@@ -31,7 +31,7 @@ def check(name, text):
     print("*" * 60)
     print(text)
     print("*" * 60)
-    response = input("Accept this %s (Y/n)? " % name).strip().lower()
+    response = input(f"Accept this {name} (Y/n)? ").strip().lower()
     if response and response != "y":
         sys.exit(1)
 
diff --git a/pyproject.toml b/pyproject.toml
index 117c7fc8..66b9e52a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,16 +22,19 @@ indent-width = 4
 target-version = "py38"
 
 [tool.ruff.lint]
-# ruff enables Pyflakes (`F`) and a subset of the pycodestyle (`E`)  codes by default.
+# ruff enables Pyflakes (`F`) and a subset of the pycodestyle (`E`) codes by default.
 select = [
-  "F", # pyflakes
-  "E4", "E7", "E9", # pycodestyle
   "B", # flake8-bugbear
   "C4", # comprehensions
+  "E", # pycodestyle
+  "F", # pyflakes
+  "I001", # isort
+  "SIM", # flake8-simplify
   "UP", # pyupgrade
 ]
 ignore = [
   "C408", # unnecessary dict call
+  "SIM115", # Use context handler for opening files
 ]
 
 # Allow fix for all enabled rules (when `--fix`) is provided.
diff --git a/tests/test_config.py b/tests/test_config.py
index 2d55612b..6209fa11 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -2,19 +2,19 @@
 Unit tests for config file and CLI argument parsing.
 """
 
-from io import BytesIO
 import pathlib
+from io import BytesIO
 from textwrap import dedent
 
 import pytest
 
 from vulture.config import (
     DEFAULTS,
+    InputError,
     _check_input_config,
     _parse_args,
     _parse_toml,
     make_config,
-    InputError,
 )
 
 
diff --git a/tests/test_encoding.py b/tests/test_encoding.py
index 560a6e5a..88b4c6f6 100644
--- a/tests/test_encoding.py
+++ b/tests/test_encoding.py
@@ -1,8 +1,9 @@
 import codecs
 
-from . import v
 from vulture.utils import ExitCode
 
+from . import v
+
 assert v  # Silence pyflakes.
 
 
diff --git a/tests/test_errors.py b/tests/test_errors.py
index 87feff43..17bbffe3 100644
--- a/tests/test_errors.py
+++ b/tests/test_errors.py
@@ -1,8 +1,9 @@
 import pytest
 
-from . import v, call_vulture
 from vulture.utils import ExitCode
 
+from . import call_vulture, v
+
 assert v  # Silence pyflakes.
 
 
diff --git a/tests/test_noqa.py b/tests/test_noqa.py
index 7b364ad8..5ce96724 100644
--- a/tests/test_noqa.py
+++ b/tests/test_noqa.py
@@ -2,6 +2,7 @@
 
 from vulture.core import ERROR_CODES
 from vulture.noqa import NOQA_CODE_MAP, NOQA_REGEXP, _parse_error_codes
+
 from . import check, v
 
 assert v  # Silence pyflakes.
diff --git a/tests/test_reachability.py b/tests/test_reachability.py
index a7eb24a3..e0f8f359 100644
--- a/tests/test_reachability.py
+++ b/tests/test_reachability.py
@@ -1,5 +1,4 @@
-from . import check_multiple_unreachable, check_unreachable
-from . import v
+from . import check_multiple_unreachable, check_unreachable, v
 
 assert v  # Silence pyflakes
 
diff --git a/tests/test_scavenging.py b/tests/test_scavenging.py
index 71d762f1..3095978e 100644
--- a/tests/test_scavenging.py
+++ b/tests/test_scavenging.py
@@ -2,9 +2,10 @@
 
 import pytest
 
-from . import check, v
 from vulture.utils import ExitCode
 
+from . import check, v
+
 assert v  # Silence pyflakes.
 
 
diff --git a/tests/test_script.py b/tests/test_script.py
index 5723addb..6b417434 100644
--- a/tests/test_script.py
+++ b/tests/test_script.py
@@ -3,9 +3,10 @@
 import subprocess
 import sys
 
-from . import call_vulture, REPO, WHITELISTS
 from vulture.utils import ExitCode
 
+from . import REPO, WHITELISTS, call_vulture
+
 
 def test_module_with_explicit_whitelists():
     assert call_vulture(["vulture/"] + WHITELISTS) == ExitCode.NoDeadCode
diff --git a/vulture/core.py b/vulture/core.py
index 5b7db43a..cc301b71 100644
--- a/vulture/core.py
+++ b/vulture/core.py
@@ -1,21 +1,18 @@
 import ast
-from fnmatch import fnmatch, fnmatchcase
-from functools import partial
-from pathlib import Path
 import pkgutil
 import re
 import string
 import sys
+from fnmatch import fnmatch, fnmatchcase
+from functools import partial
+from pathlib import Path
 from typing import List
 
-from vulture import lines
-from vulture import noqa
-from vulture import utils
+from vulture import lines, noqa, utils
 from vulture.config import InputError, make_config
 from vulture.reachability import Reachability
 from vulture.utils import ExitCode
 
-
 DEFAULT_CONFIDENCE = 60
 
 IGNORED_VARIABLE_NAMES = {"object", "self"}
@@ -161,12 +158,9 @@ def get_report(self, add_size=False):
             size_report = f", {self.size:d} {line_format}"
         else:
             size_report = ""
-        return "{}:{:d}: {} ({}% confidence{})".format(
-            utils.format_path(self.filename),
-            self.first_lineno,
-            self.message,
-            self.confidence,
-            size_report,
+        return (
+            f"{utils.format_path(self.filename)}:{self.first_lineno:d}: "
+            f"{self.message} ({self.confidence}% confidence{size_report})"
         )
 
     def get_whitelist_string(self):
@@ -177,8 +171,9 @@ def get_whitelist_string(self):
             prefix = ""
             if self.typ in ["attribute", "method", "property"]:
                 prefix = "_."
-            return "{}{}  # unused {} ({}:{:d})".format(
-                prefix, self.name, self.typ, filename, self.first_lineno
+            return (
+                f"{prefix}{self.name}  # unused {self.typ} "
+                f"({filename}:{self.first_lineno:d})"
             )
 
     def _tuple(self):
diff --git a/vulture/noqa.py b/vulture/noqa.py
index 4fb3057a..471f0f95 100644
--- a/vulture/noqa.py
+++ b/vulture/noqa.py
@@ -1,5 +1,5 @@
-from collections import defaultdict
 import re
+from collections import defaultdict
 
 NOQA_REGEXP = re.compile(
     # Use the same regex as flake8 does.
diff --git a/vulture/utils.py b/vulture/utils.py
index 3382dca3..a3a40fd8 100644
--- a/vulture/utils.py
+++ b/vulture/utils.py
@@ -1,8 +1,8 @@
 import ast
-from enum import IntEnum
 import pathlib
 import sys
 import tokenize
+from enum import IntEnum
 
 
 class VultureInputException(Exception):
diff --git a/vulture/whitelists/ctypes_whitelist.py b/vulture/whitelists/ctypes_whitelist.py
index 42fed2d7..294bf710 100644
--- a/vulture/whitelists/ctypes_whitelist.py
+++ b/vulture/whitelists/ctypes_whitelist.py
@@ -1,5 +1,4 @@
-from ctypes import _CFuncPtr
-from ctypes import _Pointer
+from ctypes import _CFuncPtr, _Pointer
 
 _CFuncPtr.argtypes
 _CFuncPtr.errcheck
diff --git a/vulture/whitelists/unittest_whitelist.py b/vulture/whitelists/unittest_whitelist.py
index d68e0b55..121fc4a0 100644
--- a/vulture/whitelists/unittest_whitelist.py
+++ b/vulture/whitelists/unittest_whitelist.py
@@ -1,4 +1,4 @@
-from unittest import mock, TestCase
+from unittest import TestCase, mock
 
 TestCase.setUp
 TestCase.tearDown