diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 270bedd..545a892 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -9,7 +9,7 @@ jobs:
       fail-fast: true
       matrix:
         os: [ ubuntu-latest ]
-        php: [ 8.0, 7.4 ]
+        php: [ 8.0, 8.1 ]
         dependency-version: [ prefer-stable ]
 
     name: P${{ matrix.php }} - L${{ matrix.laravel }} - ${{ matrix.dependency-version }} - ${{ matrix.os }}
diff --git a/composer.json b/composer.json
index a35bf44..17d7791 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
     "require": {
         "php": "^8.0",
         "statamic/cms": "^3.3",
-        "voku/html-min": "^4.4"
+        "voku/html-min": "^4.5"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.8",
diff --git a/config/html-minify.php b/config/html-minify.php
index af42c8d..2b91f46 100644
--- a/config/html-minify.php
+++ b/config/html-minify.php
@@ -18,4 +18,8 @@
     'removeSpacesBetweenTags'    => false,
     'removeOmittedQuotes'        => false,
     'removeOmittedHtmlTags'      => false,
+
+    'excludedContentTypes' => [
+        'application/xml',
+    ],
 ];
diff --git a/src/HtmlMinifyMiddleware.php b/src/HtmlMinifyMiddleware.php
index b33e17b..d87c5ca 100644
--- a/src/HtmlMinifyMiddleware.php
+++ b/src/HtmlMinifyMiddleware.php
@@ -4,6 +4,7 @@
 
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
+use Statamic\Support\Arr;
 use Symfony\Component\HttpFoundation\StreamedResponse;
 
 class HtmlMinifyMiddleware
@@ -18,14 +19,21 @@ class HtmlMinifyMiddleware
      */
     public function handle(Request $request, \Closure $next)
     {
+        /** @var $response \Illuminate\Http\Response */
         $response = $next($request);
 
         if ($response instanceof StreamedResponse || $response instanceof JsonResponse) {
             return $next($request);
         }
 
-        $html = (new HtmlMinify($response->getContent()))->minifiedHtml();
+        foreach (config('html-minify.excludedContentTypes') as $type) {
+            if ($response->headers->contains('content-type', $type)) {
+                return $next($request);
+            }
+        }
 
+
+        $html = (new HtmlMinify($response->getContent()))->minifiedHtml();
         return $response->setContent($html);
     }
 }