diff --git a/.tangled/workflows/ci.yml b/.tangled/workflows/ci.yml
new file mode 100644
index 0000000..ed280ee
--- /dev/null
+++ b/.tangled/workflows/ci.yml
@@ -0,0 +1,19 @@
+when:
+  - event: ["push"]
+    branch: ["main"]
+  - event: ["pull_request"]
+    branch: ["main"]
+
+engine: "nixery"
+
+dependencies:
+  nixpkgs:
+    - go
+
+steps:
+  - name: "Test with coverage"
+    environment:
+      CGO_ENABLED: "0"
+    command: |
+      go test -coverprofile=coverage.out -covermode=atomic ./...
+      ./check-coverage