diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
new file mode 100644
index 0000000..cbddcfc
--- /dev/null
+++ b/.github/workflows/validate.yml
@@ -0,0 +1,34 @@
+name: Validate swup.js.org
+
+# End-to-end check: `swup validate` against the docs site,
+# same as `npm run test:validate` in swup/docs
+
+on:
+  push:
+    branches: [main, master, next]
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  validate:
+    name: Validate swup.js.org
+    # Playwright 1.55 doesn't support ubuntu 26.04 (ubuntu-latest) yet
+    runs-on: ubuntu-24.04
+    timeout-minutes: 10
+
+    steps:
+      - name: Check out repo
+        uses: actions/checkout@v6
+
+      - name: Set up node
+        uses: actions/setup-node@v6
+        with:
+          node-version: 24
+
+      - run: npm ci
+      - run: npm run build
+      - run: npx playwright install --with-deps chromium
+
+      - name: Validate swup.js.org
+        run: >-
+          ./bin/run.js validate --parallel --sitemap=https://swup.js.org/sitemap.xml
diff --git a/swup.config.js b/swup.config.js
index f6683d2..7e3f74d 100644
--- a/swup.config.js
+++ b/swup.config.js
@@ -1,9 +1,7 @@
+// Mirrors swup.config.mjs in swup/docs
 export default {
 	swup: {
-		animationSelector: '[class*="swup-transition-"]'
-	},
-	validate: {
-		url: 'https://swup.js.org',
-		limit: 10
+		animationSelector: '[class*="swup-transition-"]',
+		containers: ['#swup']
 	}
 };