diff --git a/deploy.sh b/deploy.sh
new file mode 100755
index 00000000..636414ca
--- /dev/null
+++ b/deploy.sh
@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+set -e
+
+# Build script for deploying on Netlify.
+#
+# "composer install" and "yarn install" are run automatically, so there's no
+# need to add them here.
+
+# Run the tests to ensure that nothing is broken.
+vendor/bin/phpunit
+
+# Generate the site once with no assets to that PurgeCSS has something to look
+# at.
+vendor/bin/sculpin generate -e prod
+
+# Generate the front-end assets.
+yarn build
+
+# Re-generate the again with the assets in the correct location.
+vendor/bin/sculpin generate -e prod
diff --git a/webpack.mix.js b/webpack.mix.js
index 8c4d3a53..6746b7af 100644
--- a/webpack.mix.js
+++ b/webpack.mix.js
@@ -13,13 +13,13 @@ mix.disableNotifications()
     .copyDirectory('assets/images', 'source/build/images')
     .copyDirectory('node_modules/font-awesome/fonts', 'source/build/fonts')
     .tailwind()
-    // .purgeCss({
-    //     globs: [
-    //         path.join(__dirname, 'output_*/**/*.html'),
-    //     ],
-    //     whitelistPatterns: [/language/, /hljs/],
-    //     whitelistPatternsChildren: [/^markdown$/]
-    // })
+    .purgeCss({
+        globs: [
+            path.join(__dirname, 'output_*/**/*.html'),
+        ],
+        whitelistPatterns: [/language/, /hljs/],
+        whitelistPatternsChildren: [/^markdown$/]
+    })
     .options({
         processCssUrls: false
     });