diff --git a/.github/workflows/qc.yml b/.github/workflows/qc.yml
index 6eb596f..0e66790 100644
--- a/.github/workflows/qc.yml
+++ b/.github/workflows/qc.yml
@@ -29,7 +29,7 @@ jobs:
       - name: Check common spelling errors
         run: poetry run tox -e codespell
 
-      - name: Check code quality with flake8
+      - name: Check code quality with ruff
         run: poetry run tox -e lint
 
       - name: Test with pytest and generate coverage file
diff --git a/pyproject.toml b/pyproject.toml
index 8179e41..318483b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -109,6 +109,7 @@ extend-ignore = [
     "D212",  # `multi-line-summary-first-line`
     ]
 
+# Allow autofix for all enabled rules (when `--fix`) is provided.
 fixable = ["ALL"]
 
 # Select or ignore from https://beta.ruff.rs/docs/rules/
@@ -125,7 +126,8 @@ select = [
 unfixable = []
 
 # Unlike Flake8, default to a complexity level of 10.
-mccabe = { max-complexity = 10 }
+[tool.ruff.lint.mccabe]
+max-complexity = 10
 
 [tool.ruff.lint.isort]
 known-third-party = ["duckdb"]
@@ -136,13 +138,6 @@ count = ""
 quiet-level = 3
 # ignore-words-list = ""
 
-[tool.isort]
-profile = "black"
-multi_line_output = 3
-line_length = 100
-include_trailing_comma = true
-reverse_relative = true
-
 [build-system]
 requires = ["poetry-core>=1.0.0", "poetry-dynamic-versioning"]
 build-backend = "poetry_dynamic_versioning.backend"
diff --git a/tox.ini b/tox.ini
index dbdef3f..1575640 100644
--- a/tox.ini
+++ b/tox.ini
@@ -34,22 +34,18 @@ commands = coverage erase
 # This is used during development
 [testenv:lint-fix]
 deps =
-    black
     ruff
 skip_install = true
 commands =
-    black src/ tests/ --exclude "/(tests/input|tests/output)/"
     ruff --fix src/ tests/ --exclude tests/input --exclude tests/output
 description = Run linters.
 
 # This is used for QC checks.
 [testenv:lint]
 deps =
-    black
     ruff
 skip_install = true
 commands =
-    black --check --diff src/ tests/ --exclude "/(tests/input|tests/output)/"
     ruff check src/ tests/ --exclude tests/input --exclude tests/output
 description = Run linters.