diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index 0fa8c20..110fc78 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -30,12 +30,11 @@ jobs:
         virtualenvs-in-project: true
     - name: Install project
       run: poetry install --without dev  # installs main and test groups
-    - name: Lint with isort
-      # by default: exit with error if imports are not properly sorted; show diffs
-      uses: isort/isort-action@master
-    - name: Lint with black
-      # by default: exit with error if code is not properly formatted; show diffs
-      uses: psf/black@stable
+    - name: Lint format with ruff
+      # by default: exit with error if rule violations
+      uses: chartboost/ruff-action@v1
+      with:
+        args: format
     - name: Lint with ruff
       # by default: exit with error if rule violations
       uses: chartboost/ruff-action@v1
diff --git a/pyproject.toml b/pyproject.toml
index b7f50c1..bd59351 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,8 +17,6 @@ requests = "^2.23.1"
 playwright = "^1.39.0"
 
 [tool.poetry.group.dev.dependencies]
-black = "^24.4.0"
-isort = "^5.13.0"
 ruff = "^0.4.1"
 
 [tool.poetry.group.test.dependencies]
@@ -43,13 +41,15 @@ disallow_untyped_calls = false
 
 [tool.ruff]
 # Enable rulesets:
-# flake8-ANNotations, flake8-COMmas, pyDocstyle, pycodestylE, pyFlakes,
+# flake8-ANNotations, flake8-COMmas, pyDocstyle, pycodestylE, pyFlakes, Isort,
 # flake8-Future-Annotations, flake8-bandit (S)
-select = ["ANN", "COM", "D", "E", "F", "FA", "S"]
+select = ["ANN", "COM", "D", "E", "F", "I", "FA", "S"]
 
-# Ignore rules:
+# Ignore rules that conflict with Ruff formatter:
+#   COM812 Trailing comma missing
+# Ignore other rules:
 #  Missing type annotation for `self` in method
-ignore = ["ANN101"]
+ignore = ["COM812", "ANN101"]
 
 [tool.ruff.per-file-ignores]
 # Use of `assert` detected