diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 93bfef3..ca9ca0d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,7 +10,7 @@ jobs:
     strategy:
       matrix:
         operating-system: [ubuntu-latest]
-        php-version: ['7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
+        php-version: ['7.4', '8.0', '8.1', '8.2', '8.3', '8.4', '8.5']
     name: ${{ matrix.php-version }}
     runs-on: ${{ matrix.operating-system }}
     steps:
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index 85f3ab2..1fc3399 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -2,3 +2,6 @@ parameters:
   paths:
     - src
   level: max
+  reportUnmatchedIgnoredErrors: false
+  ignoreErrors:
+    - '#^Function http_get_last_response_headers not found.$#'
diff --git a/src/HttpAdapter/HttpStreamWrapperClient.php b/src/HttpAdapter/HttpStreamWrapperClient.php
index 97cf2b8..f74acf2 100644
--- a/src/HttpAdapter/HttpStreamWrapperClient.php
+++ b/src/HttpAdapter/HttpStreamWrapperClient.php
@@ -80,7 +80,11 @@ private function request(string $method, Request $request): Response
             );
         }
 
-        return HttpStreamWrapperResponse::fromResponse($http_response_header, $responseBody);
+        $responseHeaders = (PHP_VERSION_ID >= 80500
+            ? http_get_last_response_headers()
+            : $http_response_header) ?? [];
+
+        return HttpStreamWrapperResponse::fromResponse($responseHeaders, $responseBody);
     }
 
     /**