diff --git a/.github/workflows/master.yml b/.github/workflows/master.yml
new file mode 100644
index 0000000..8000b91
--- /dev/null
+++ b/.github/workflows/master.yml
@@ -0,0 +1,13 @@
+- name: CI
+  on: [push]
+  branch: master
+  steps:
+  - name: Setup Go environment
+    uses: actions/setup-go@v5.0.0
+    with:
+      check-latest: true
+      go-version-file: 'go.mod'
+      cache-dependency-path: |
+        go.sum
+    run: go test -v ./internal/... ./gwirl/...
+