diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..2ffeedf
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,23 @@
+name: 'test'
+on:   ['push', 'pull_request']
+
+jobs:
+  # Uncomment to get a debug shell.
+  # debug: {runs-on: 'ubuntu-latest', steps: [{uses: 'actions/checkout@v4'}, {uses: 'mxschmitt/action-tmate@v3'}]}
+
+  test:
+    name:    'test (linux)'
+    runs-on: 'ubuntu-latest'
+    steps:
+      - uses: 'actions/checkout@v4'
+      - name: 'test (linux)'
+        run: |
+          go test -race ./...
+
+  staticcheck:
+    name:    'staticcheck'
+    runs-on: 'ubuntu-latest'
+    steps:
+      - uses: 'actions/checkout@v4'
+      - uses: 'dominikh/staticcheck-action@v1.3.1'
+        with: {version: '2024.1'}
diff --git a/go.mod b/go.mod
index 1e60caf..4c3e724 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module zgo.at/uni/v2
 
-go 1.21
+go 1.21.13
 
 require (
 	zgo.at/runewidth v0.1.0