diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..dd4058f
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,19 @@
+name: CI
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: cachix/install-nix-action@v26
+
+      - name: build
+        run: nix-build -A build -A shell -A checks