diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..2263f68
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,6 @@
+.gitattributes export-ignore
+.github export-ignore
+.gitignore export-ignore
+mypy.ini export-ignore
+pyproject.toml export-ignore
+tox.ini export-ignore
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 0000000..b4c71dd
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,20 @@
+name: CI
+on: push
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.11"
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install ruff mypy
+      # Update output format to enable automatic inline annotations.
+      - name: Run Ruff
+        run: ruff check --output-format=github .
+      - name: Run Mypy
+        run: mypy .
diff --git a/.gitignore b/.gitignore
index 28b7b95..1ef5e08 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
+.tox
+.ruff_cache
 *.pyc
 *.cache
 *.sublime-project
diff --git a/origami.py b/origami.py
index d773574..ae7a9fd 100644
--- a/origami.py
+++ b/origami.py
@@ -321,7 +321,7 @@ def zoom_pane(self, fraction):
                 fraction_vertical = fraction[1]
 
         fraction_horizontal = min(1, max(0, fraction_horizontal))
-        fraction_vertical  = min(1, max(0, fraction_vertical))
+        fraction_vertical = min(1, max(0, fraction_vertical))
 
         window = self.window
         rows, cols, cells = self.get_layout()
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..6e1cec2
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,14 @@
+[tool.ruff]
+line-length = 120
+indent-width = 4
+target-version = "py38"
+
+[tool.ruff.lint]
+preview = true
+select = ["B", "E", "F", "W"]
+fixable = ["ALL"]
+
+[tool.ruff.format]
+quote-style = "double"
+indent-style = "space"
+line-ending = "lf"
diff --git a/tox.ini b/tox.ini
index fe9c57c..141a97c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,17 +7,10 @@
 envlist = py3
 skipsdist = True
 
-[pycodestyle]
-max-line-length = 120
-
-[flake8]
-max-line-length = 120
-ignore = W191
-
 [testenv]
 deps =
-    flake8==3.8.3
-    mypy==0.790
+    mypy==1.6.1
+    ruff==0.1.4
 commands =
-    mypy plugin
-    flake8 plugin tests
+    mypy .
+    ruff .