diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8f56754..f5801af 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## Unreleased
+
+PHP 8.5 deprecation fixes for the 0.3 line. No API change.
+
+- `NativeSsrTransport` and `NativeSsrPurgeTransport` no longer call
+  `curl_close()` (deprecated in PHP 8.5, no effect since 8.0). It was logged
+  on every cURL render and purge.
+- The streams fallback reads the response headers from
+  `stream_get_meta_data()`, not `$http_response_header` (deprecated in
+  PHP 8.5).
+- Tests cover both transports over cURL and streams and fail on
+  deprecations.
+
 ## 0.3.0 — 2026-09-12
 
 First public Packagist release. Composer name is `mapsight/embed` (MIT).
diff --git a/phpunit.xml b/phpunit.xml
index 94d6eaa..f02c941 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -3,10 +3,13 @@
          xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
          bootstrap="vendor/autoload.php"
          colors="true"
-         cacheDirectory=".phpunit.cache">
+         cacheDirectory=".phpunit.cache"
+         failOnDeprecation="true"
+         displayDetailsOnTestsThatTriggerDeprecations="true">
     <testsuites>
         <testsuite name="OpenMapsight Embed">
             <directory>tests</directory>
+            <exclude>tests/fixtures</exclude>
         </testsuite>
     </testsuites>
 </phpunit>
diff --git a/src/Embed/NativeSsrPurgeTransport.php b/src/Embed/NativeSsrPurgeTransport.php
index cdc92df..782eee4 100644
--- a/src/Embed/NativeSsrPurgeTransport.php
+++ b/src/Embed/NativeSsrPurgeTransport.php
@@ -47,7 +47,7 @@ private function postWithCurl(
         $body = curl_exec($handle);
         $status = (int) curl_getinfo($handle, CURLINFO_HTTP_CODE);
         $error = curl_error($handle);
-        curl_close($handle);
+        unset($handle);
 
         if ($body === false) {
             throw new \RuntimeException($error !== '' ? $error : 'SSR purge request failed');
@@ -76,14 +76,27 @@ private function postWithStreams(string $url, string $json, float $timeoutSecond
             ],
         ]);
 
-        $body = @file_get_contents($url, false, $context);
+        // Response headers come from the stream metadata: PHP 8.5 deprecates
+        // $http_response_header, and http_get_last_response_headers() needs 8.4.
+        $stream = @fopen($url, 'rb', false, $context);
+        if ($stream === false) {
+            throw new \RuntimeException('SSR purge request failed');
+        }
+
+        try {
+            $headers = stream_get_meta_data($stream)['wrapper_data'] ?? null;
+            $body = stream_get_contents($stream);
+        } finally {
+            fclose($stream);
+        }
+
         if ($body === false) {
             throw new \RuntimeException('SSR purge request failed');
         }
 
         $status = 0;
-        if (isset($http_response_header[0])
-            && preg_match('/\s(\d{3})\s/', $http_response_header[0], $matches) === 1
+        if (is_array($headers) && is_string($headers[0] ?? null)
+            && preg_match('/\s(\d{3})\s/', $headers[0], $matches) === 1
         ) {
             $status = (int) $matches[1];
         }
diff --git a/src/Embed/NativeSsrTransport.php b/src/Embed/NativeSsrTransport.php
index 6b6c5c0..8fa8f7b 100644
--- a/src/Embed/NativeSsrTransport.php
+++ b/src/Embed/NativeSsrTransport.php
@@ -62,7 +62,7 @@ private function postWithCurl(
         $body = curl_exec($handle);
         $status = (int) curl_getinfo($handle, CURLINFO_HTTP_CODE);
         $error = curl_error($handle);
-        curl_close($handle);
+        unset($handle);
 
         if ($body === false) {
             throw new \RuntimeException($error !== '' ? $error : 'SSR request failed');
@@ -98,14 +98,27 @@ private function postWithStreams(string $url, string $json, float $timeoutSecond
             ],
         ]);
 
-        $body = @file_get_contents($url, false, $context);
+        // Response headers come from the stream metadata: PHP 8.5 deprecates
+        // $http_response_header, and http_get_last_response_headers() needs 8.4.
+        $stream = @fopen($url, 'rb', false, $context);
+        if ($stream === false) {
+            throw new \RuntimeException('SSR request failed');
+        }
+
+        try {
+            $headers = stream_get_meta_data($stream)['wrapper_data'] ?? null;
+            $body = stream_get_contents($stream);
+        } finally {
+            fclose($stream);
+        }
+
         if ($body === false) {
             throw new \RuntimeException('SSR request failed');
         }
 
         $status = 0;
-        if (isset($http_response_header[0])
-            && preg_match('/\s(\d{3})\s/', $http_response_header[0], $matches) === 1
+        if (is_array($headers) && is_string($headers[0] ?? null)
+            && preg_match('/\s(\d{3})\s/', $headers[0], $matches) === 1
         ) {
             $status = (int) $matches[1];
         }
diff --git a/tests/NativeTransportsTest.php b/tests/NativeTransportsTest.php
new file mode 100644
index 0000000..f3c8562
--- /dev/null
+++ b/tests/NativeTransportsTest.php
@@ -0,0 +1,109 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenMapsight\Tests;
+
+use OpenMapsight\Embed\NativeSsrPurgeTransport;
+use OpenMapsight\Embed\NativeSsrTransport;
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\TestCase;
+
+final class NativeTransportsTest extends TestCase
+{
+    private static int $port = 0;
+
+    /** @var resource|false */
+    private static $process = false;
+
+    public static function setUpBeforeClass(): void
+    {
+        self::$port = 18700 + random_int(0, 200);
+        self::$process = proc_open(
+            [PHP_BINARY, '-S', '127.0.0.1:' . self::$port, __DIR__ . '/fixtures/http-server.php'],
+            [
+                0 => ['file', '/dev/null', 'r'],
+                1 => ['file', '/dev/null', 'w'],
+                2 => ['file', '/dev/null', 'w'],
+            ],
+            $pipes,
+        );
+        if (self::$process === false) {
+            self::markTestSkipped('could not start php -S');
+        }
+
+        for ($i = 0; $i < 50; $i++) {
+            $fp = @fsockopen('127.0.0.1', self::$port, $errno, $errstr, 0.1);
+            if (is_resource($fp)) {
+                fclose($fp);
+
+                return;
+            }
+            usleep(50000);
+        }
+
+        self::tearDownAfterClass();
+        self::markTestSkipped('php -S did not become ready');
+    }
+
+    public static function tearDownAfterClass(): void
+    {
+        if (self::$process !== false) {
+            proc_terminate(self::$process);
+            proc_close(self::$process);
+            self::$process = false;
+        }
+    }
+
+    /** @return iterable<string, array{string}> */
+    public static function paths(): iterable
+    {
+        yield 'curl' => ['postWithCurl'];
+        yield 'streams' => ['postWithStreams'];
+    }
+
+    #[DataProvider('paths')]
+    public function test_render_reads_body_on_2xx(string $method): void
+    {
+        $body = $this->render($method, '/render', ['X-Request-Id' => 'req-1']);
+
+        $data = json_decode($body, true, 512, JSON_THROW_ON_ERROR);
+        $this->assertSame(1, $data['v'] ?? null);
+        $this->assertSame('req-1', $data['state']['requestId'] ?? null);
+    }
+
+    #[DataProvider('paths')]
+    public function test_render_throws_on_5xx(string $method): void
+    {
+        $this->expectExceptionMessage('SSR HTTP status 503');
+        $this->render($method, '/render?status=503');
+    }
+
+    #[DataProvider('paths')]
+    public function test_purge_reads_status(string $method): void
+    {
+        $this->assertSame('["doc::1"]', $this->purge($method, '/purge'));
+        $this->assertSame('[]', $this->purge($method, '/purge?status=204'));
+    }
+
+    /** @param array<string, string> $headers */
+    private function render(string $method, string $path, array $headers = []): string
+    {
+        $transport = new NativeSsrTransport();
+        $url = 'http://127.0.0.1:' . self::$port . $path;
+        $args = $method === 'postWithCurl'
+            ? [$url, '{"v":1}', 2.0, 0.5, $headers]
+            : [$url, '{"v":1}', 2.0, $headers];
+
+        return (new \ReflectionMethod($transport, $method))->invoke($transport, ...$args);
+    }
+
+    private function purge(string $method, string $path): string
+    {
+        $transport = new NativeSsrPurgeTransport();
+        $url = 'http://127.0.0.1:' . self::$port . $path;
+        $args = $method === 'postWithCurl' ? [$url, '{}', 2.0, 0.5] : [$url, '{}', 2.0];
+
+        return (new \ReflectionMethod($transport, $method))->invoke($transport, ...$args);
+    }
+}
diff --git a/tests/fixtures/http-server.php b/tests/fixtures/http-server.php
new file mode 100644
index 0000000..e35978d
--- /dev/null
+++ b/tests/fixtures/http-server.php
@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+$path = parse_url($_SERVER['REQUEST_URI'] ?? '/', PHP_URL_PATH);
+$query = [];
+parse_str((string) (parse_url($_SERVER['REQUEST_URI'] ?? '/', PHP_URL_QUERY) ?? ''), $query);
+
+if ($path === '/render') {
+    if (($query['status'] ?? '') === '503') {
+        http_response_code(503);
+        header('Content-Type: text/plain');
+        echo 'down';
+        exit;
+    }
+
+    http_response_code(200);
+    header('Content-Type: application/json');
+    echo json_encode([
+        'v' => 1,
+        'html' => '<div id="mapsight-embed-1" class="mapsight-embed"></div>',
+        'state' => ['requestId' => $_SERVER['HTTP_X_REQUEST_ID'] ?? null],
+    ], JSON_THROW_ON_ERROR);
+    exit;
+}
+
+if ($path === '/purge') {
+    if (($query['status'] ?? '') === '204') {
+        http_response_code(204);
+        exit;
+    }
+
+    http_response_code(200);
+    header('Content-Type: application/json');
+    echo '["doc::1"]';
+    exit;
+}
+
+http_response_code(404);
+header('Content-Type: text/plain');
+echo 'not found';