diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
deleted file mode 100644
index cb466aba..00000000
--- a/.github/workflows/pytest.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-name: pytest
-on:
-  push:
-  pull_request:
-  workflow_dispatch:
-jobs:
-  pytest:
-    strategy:
-      fail-fast: false
-      matrix:  # https://github.com/actions/python-versions/releases
-        python-version: ["3.8", "3.10", "3.12", "3.13"]
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
-          allow-prereleases: true
-      - run: pip install --upgrade pip setuptools
-      - run: pip install pytest
-      - run: pip install --editable .
-      - run: pytest
diff --git a/pyproject.toml b/pyproject.toml
index 3db8907f..05ee2b3a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,3 +5,18 @@ requires = [
     "setuptools >= 66.1"
 ]
 build-backend = "setuptools.build_meta"
+
+[tool.codespell]
+ignore-words-list = "alltime,blong,ccompiler,fo,hel"
+skip = "*.bak"
+
+[tool.ruff.lint]
+select = [
+  "E9",
+  "F63",
+  "F7",
+  "F82",
+]
+[tool.ruff.lint.per-file-ignores]
+"src/cffi/verifier.py" = ["F821"]
+"testing/*" = ["F821"]