diff --git a/.github/workflows/deploy-pages.yml b/.github/workflows/deploy-pages.yml
new file mode 100644
index 0000000..872d067
--- /dev/null
+++ b/.github/workflows/deploy-pages.yml
@@ -0,0 +1,45 @@
+name: Deploy to GitHub Pages
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  deploy:
+    runs-on: ubuntu-22.04
+    permissions:
+      contents: write
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.ref }}
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup Node
+        uses: actions/setup-node@v3
+        with:
+          node-version: '18'
+
+      - name: Cache npm
+        uses: actions/cache@v3
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-node-${{ hashFiles('**/package.json') }}
+
+      - name: Cache Eleventy .cache
+        uses: actions/cache@v3
+        with:
+          path: ./.cache
+          key: ${{ runner.os }}-eleventy-fetch-cache
+
+
+      - run: npm install
+      - run: npm run build-ghpages
+
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        if: github.ref == 'refs/heads/main'
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./_site
diff --git a/.gitignore b/.gitignore
index ab338d7..83253a1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 _site/
 node_modules/
 package-lock.json
+.cache
diff --git a/_includes/layouts/base.njk b/_includes/layouts/base.njk
index 1308e54..11e085e 100644
--- a/_includes/layouts/base.njk
+++ b/_includes/layouts/base.njk
@@ -56,6 +56,6 @@
 
 		<footer></footer>
 
-		<!-- Current page: {{ page.url | htmlBaseUrl }} -->
+		<!-- This page `{{ page.url | htmlBaseUrl }}` was built on {% currentBuildDate %} -->
 	</body>
 </html>
diff --git a/eleventy.config.images.js b/eleventy.config.images.js
index b5de176..fb9bfe7 100644
--- a/eleventy.config.images.js
+++ b/eleventy.config.images.js
@@ -14,7 +14,7 @@ export default function(eleventyConfig) {
 		// e.g. <img loading decoding> assigned on the HTML tag will override these values.
 		defaultAttributes: {
 			loading: "lazy",
-			decoding: "async"
-		}
+			decoding: "async",
+		},
 	});
 };
diff --git a/eleventy.config.js b/eleventy.config.js
index 7be6c48..1111878 100644
--- a/eleventy.config.js
+++ b/eleventy.config.js
@@ -94,6 +94,10 @@ export default async function(eleventyConfig) {
 		});
 	});
 
+	eleventyConfig.addShortcode("currentBuildDate", () => {
+		return (new Date()).toISOString();
+	})
+
 	// Features to make your build faster (when you need them)
 
 	// If your passthrough copy gets heavy and cumbersome, add this line