diff --git a/.github/workflows/black.yml b/.github/workflows/black.yml
new file mode 100644
index 0000000..02366d4
--- /dev/null
+++ b/.github/workflows/black.yml
@@ -0,0 +1,14 @@
+name: Lint
+
+on: [pull_request]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: psf/black@stable
+        with:
+          options: "--check --verbose"
+          src: "./src"
+          # use_pyproject: true
diff --git a/.gitignore b/.gitignore
index f86f759..38ceb2e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,15 +1,8 @@
 .DS_Store
-src/.DS_Store
-src/RT_tables/.DS_Store
-examples/.DS_Store
-examples/materials/.DS_Store
-tests/.DS_Store
-tests/materials/.DS_Store
 src/__pycache__/
 examples/.ipynb_checkpoints
 examples/WASP52b_dT.csv
 examples/WASP52b_sigmaT.csv
 examples/WASP52b_nsig_fit.csv
 env/
-src/sunbather
-*.egg-info
\ No newline at end of file
+*.egg-info