diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index 1acd932..c2ab5f2 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -37,8 +37,3 @@ jobs:
 
     - name: 'Upload coverage report'
       run: bash <(curl -s https://codecov.io/bash)
-
-    - name: 'Run linters'
-      if: matrix.python-version == '3.8'
-      run: |
-        make lint
diff --git a/Makefile b/Makefile
index 650fd20..e390dc1 100644
--- a/Makefile
+++ b/Makefile
@@ -28,16 +28,6 @@ update: install-poetry  ## update the sources and installation and generate "con
 	poetry update
 	poetry export -f requirements.txt --output conf/requirements.txt
 
-lint: ## Run code formatters and linter
-	poetry run flynt --fail-on-change --line-length=${MAX_LINE_LENGTH} .
-	poetry run isort --check-only .
-	poetry run flake8 .
-
-fix-code-style: ## Fix code formatting
-	poetry run flynt --line-length=${MAX_LINE_LENGTH} .
-	poetry run black --verbose --safe --line-length=${MAX_LINE_LENGTH} --skip-string-normalization .
-	poetry run isort .
-
 tox-listenvs: check-poetry ## List all tox test environments
 	poetry run tox --listenvs
 
diff --git a/pyproject.toml b/pyproject.toml
index 1438650..047ed78 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,11 +23,14 @@ tox = "*"
 pytest = "*"
 pytest-cov = "*"
 pytest-django = "*"
+pytest-darker = "*"  # https://github.com/akaihola/pytest-darker
+pytest-flake8 = "*"
+pytest-isort = "*"
 coveralls = "*"
 isort = "*"
 flake8 = "*"
 flynt = "*"
-black = "*"
+darker = "*"  # https://github.com/akaihola/darker
 pyupgrade = "*"
 
 [build-system]
@@ -35,18 +38,32 @@ requires = ["poetry-core>=1.0.0"]
 build-backend = "poetry.core.masonry.api"
 
 
+[tool.darker]
+src = ['.']
+revision = "origin/master..."
+line_length = 100
+verbose = true
+skip_string_normalization = true
+diff = false
+check = false
+stdout = false
+isort = true
+lint = [
+    "flake8",
+]
+log_level = "INFO"
+
+
+[tool.flynt]
+line_length = 100
+
+
 [tool.isort]
 # https://pycqa.github.io/isort/docs/configuration/config_files/#pyprojecttoml-preferred-format
 atomic=true
-line_length=120
-case_sensitive=false
+profile='black'
+line_length=100
 skip_glob=["*/htmlcov/*","*/migrations/*"]
-multi_line_output=3
-include_trailing_comma=true
-known_first_party=["for_runners"]
-no_lines_before="LOCALFOLDER"
-default_section="THIRDPARTY"
-sections=["FUTURE","STDLIB","THIRDPARTY","FIRSTPARTY","LOCALFOLDER"]
 lines_after_imports=2
 
 
@@ -62,7 +79,6 @@ norecursedirs = ".* .git __pycache__ conf coverage* dist htmlcov"
 #    --full-trace
 #    -p no:warnings
 addopts = """
-    --import-mode=importlib
     --reuse-db
     --nomigrations
     --cov=.
@@ -71,12 +87,15 @@ addopts = """
     --cov-report xml
     --no-cov-on-fail
     --showlocals
+    --darker
+    --flake8
+    --isort
     --doctest-modules
     --failed-first
     --last-failed-no-failures all
     --new-first
 """
-
+# TODO: --mypy
 
 [tool.tox]
 # https://tox.readthedocs.io/en/latest/example/basic.html#pyproject-toml-tox-legacy-ini
diff --git a/tests/test_lint.py b/tests/test_lint.py
deleted file mode 100644
index 003dc76..0000000
--- a/tests/test_lint.py
+++ /dev/null
@@ -1,13 +0,0 @@
-import shutil
-import subprocess
-from pathlib import Path
-
-
-BASE_PATH = Path(__file__).parent.parent
-
-
-def test_lint():
-    assert Path(BASE_PATH, 'Makefile').is_file()
-    make_bin = shutil.which('make')
-    assert make_bin is not None
-    subprocess.check_call([make_bin, 'lint'], cwd=BASE_PATH)