diff --git a/.github/workflows/ci.yml b/.github/workflows/tests.yml
similarity index 68%
rename from .github/workflows/ci.yml
rename to .github/workflows/tests.yml
index af2de12..3a17b76 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/tests.yml
@@ -1,4 +1,4 @@
-name: ci
+name: tests
 
 on:
   push:
@@ -12,7 +12,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: pre-commit/action@v3.0.0
 
   build:
@@ -21,12 +21,12 @@ jobs:
     strategy:
       matrix:
         platform: [ubuntu-latest]
-        python-version: ["3.7", "3.8", "3.9", "3.10"]
+        python-version: ["3.7", "3.11"]
         include:
           - platform: macos-latest
-            python-version: "3.10"
+            python-version: "3.11"
           - platform: windows-latest
-            python-version: "3.10"
+            python-version: "3.11"
 
     runs-on: ${{ matrix.platform }}
 
@@ -34,10 +34,10 @@ jobs:
       - uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Test with tox
         run: |
           pip install tox
           tox -- --cov pytest_codeblocks --cov-report xml --cov-report term
-      - uses: codecov/codecov-action@v3
-        if: ${{ matrix.python-version == '3.10' && matrix.os == 'ubuntu-latest' }}
+      - uses: codecov/codecov-action@v4-beta
+        if: ${{ matrix.python-version == '3.11' && matrix.os == 'ubuntu-latest' }}
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index a1e83ea..d22aab6 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,21 +1,16 @@
 repos:
-  - repo: https://github.com/PyCQA/isort
-    rev: 5.10.1
+  - repo: https://github.com/charliermarsh/ruff-pre-commit
+    rev: v0.0.290
     hooks:
-      - id: isort
+      - id: ruff
 
   - repo: https://github.com/psf/black
-    rev: 22.3.0
+    rev: 23.9.1
     hooks:
       - id: black
         language_version: python3
 
-  - repo: https://github.com/PyCQA/flake8
-    rev: 4.0.1
-    hooks:
-      - id: flake8
-
   - repo: https://github.com/pre-commit/mirrors-prettier
-    rev: v2.6.2
+    rev: v3.0.3
     hooks:
       - id: prettier
diff --git a/LICENSE.txt b/LICENSE.txt
index 8bbe8f2..34be0c4 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2020-2022 Nico Schlömer
+Copyright (c) 2020-present Nico Schlömer
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index be6c0c9..653c3e2 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,6 @@
 
 [![gh-actions](https://img.shields.io/github/workflow/status/nschloe/pytest-codeblocks/ci?style=flat-square)](https://github.com/nschloe/pytest-codeblocks/actions?query=workflow%3Aci)
 [![codecov](https://img.shields.io/codecov/c/github/nschloe/pytest-codeblocks.svg?style=flat-square)](https://app.codecov.io/gh/nschloe/pytest-codeblocks)
-[![LGTM](https://img.shields.io/lgtm/grade/python/github/nschloe/pytest-codeblocks.svg?style=flat-square)](https://lgtm.com/projects/g/nschloe/pytest-codeblocks)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg?style=flat-square)](https://github.com/psf/black)
 
 This is pytest-codeblocks, a [pytest](https://pytest.org/) plugin for testing code
diff --git a/justfile b/justfile
index d444cc8..698f532 100644
--- a/justfile
+++ b/justfile
@@ -13,10 +13,9 @@ clean:
 	@rm -rf src/*.egg-info/ build/ dist/ .tox/
 
 format:
-	isort .
-	black .
+	ruff src/ tests/ --fix
+	black src/ tests/
 	blacken-docs README.md
 
 lint:
-	black --check .
-	flake8 .
+	pre-commit run --all
diff --git a/pyproject.toml b/pyproject.toml
index 78f4059..372149e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,6 +23,8 @@ classifiers = [
   "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
 ]
 dynamic = ["version"]
 requires-python = ">=3.7"
diff --git a/src/pytest_codeblocks/main.py b/src/pytest_codeblocks/main.py
index f0c46e6..742acaf 100644
--- a/src/pytest_codeblocks/main.py
+++ b/src/pytest_codeblocks/main.py
@@ -73,9 +73,11 @@ def extract_from_buffer(f, max_num_lines: int = 10000) -> list[CodeBlock]:
 
             elif keyword == "cont":
                 if len(out) == 0:
-                    raise RuntimeError(
-                        "Found <!--pytest-codeblocks-cont--> but no previous code block."
+                    msg = (
+                        "Found <!--pytest-codeblocks-cont--> "
+                        "but no previous code block."
                     )
+                    raise RuntimeError(msg)
                 continued_block = out[-1]
 
             elif keyword == "skip":
diff --git a/src/pytest_codeblocks/plugin.py b/src/pytest_codeblocks/plugin.py
index ab1f661..c26c569 100644
--- a/src/pytest_codeblocks/plugin.py
+++ b/src/pytest_codeblocks/plugin.py
@@ -13,7 +13,9 @@
 def pytest_addoption(parser):
     group = parser.getgroup("general")
     group.addoption(
-        "--codeblocks", action="store_true", help="enable testing of codeblocks"
+        "--codeblocks",
+        action="store_true",
+        help="enable testing of code blocks",
     )
 
 
@@ -46,7 +48,7 @@ def collect(self):
                 # pytest.mark.skipif(sys.version_info < (3, 10), reason="...")
                 #
                 # which needs sys. Import it here.
-                import sys
+                import sys  # noqa: F401
 
                 out.add_marker(eval(mark))