diff --git a/composer.json b/composer.json
index ff01166..ac7348a 100644
--- a/composer.json
+++ b/composer.json
@@ -18,11 +18,11 @@
         "amphp/socket": "^1",
         "jean85/pretty-package-versions": "^1.1",
         "psr/log": "^1.1",
-        "symfony/console": "^4.1@beta",
+        "symfony/console": "^4.1@beta|^5.0",
         "symfony/polyfill-php72": "^1.7"
     },
     "require-dev": {
-        "amphp/http-client": "^4.0@rc",
+        "amphp/http-client": "^4.0.0-rc7",
         "amphp/parallel": "^1.0.1",
         "amphp/process": "^1.0.3",
         "phpunit/php-code-coverage": "^6.1|^7.0",
diff --git a/src/ProgressBar.php b/src/ProgressBar.php
index 76bb94d..7f846db 100644
--- a/src/ProgressBar.php
+++ b/src/ProgressBar.php
@@ -29,7 +29,7 @@
     return Helper::formatMemory($bar->getMaxSteps());
 });
 SymfonyProgressBar::setPlaceholderFormatterDefinition('host', function (SymfonyProgressBar $bar) {
-    return Helper::formatMemory($bar->host);
+    return $bar->host;
 });
 
 class ProgressBar
diff --git a/tests/FunctionalTest.php b/tests/FunctionalTest.php
index 30dc7be..e9f3f9c 100644
--- a/tests/FunctionalTest.php
+++ b/tests/FunctionalTest.php
@@ -5,7 +5,9 @@
 namespace Ostrolucky\Stdinho\Tests;
 
 use Amp\Delayed;
-use Amp\Http\Client\Client;
+use Amp\Http\Client\HttpClient;
+use Amp\Http\Client\HttpClientBuilder;
+use Amp\Http\Client\Request;
 use Amp\Http\Client\Response;
 use Amp\Loop;
 use Amp\Process\Process;
@@ -20,7 +22,7 @@ class FunctionalTest extends TestCase
      */
     private $process;
     /**
-     * @var Client
+     * @var HttpClient
      */
     private $httpClient;
     /**
@@ -41,7 +43,7 @@ protected function setUp(): void
             });
             $executable = $isCoverageEnabled ? 'coverage-enabling-bin-wrapper.php' : '../bin/stdinho';
             $this->command = 'php '.__DIR__."/$executable --connections-limit=1 localhost:1338 ";
-            $this->httpClient = new Client();
+            $this->httpClient = HttpClientBuilder::buildDefault();
         });
     }
 
@@ -66,7 +68,7 @@ public function testStdinIsWrittenToSocketASAP(string $cliArguments): void
             yield new Delayed(60);
 
             /** @var Response $response */
-            $response = yield $this->httpClient->request('http://localhost:1338');
+            $response = yield $this->httpClient->request(new Request('http://localhost:1338'));
             self::assertEquals('foo', yield $response->getBody()->read()); // drain the buffer
 
             yield $this->process->getStdin()->write('bar');