diff --git a/.php-cs-fixer.dist.php b/.php-cs-fixer.dist.php
index f1b7a74..ab45b70 100644
--- a/.php-cs-fixer.dist.php
+++ b/.php-cs-fixer.dist.php
@@ -23,6 +23,7 @@
 
 new PhpCsFixerCodingStandard()->applyTo($config, [
     'heredoc_indentation' => false,
+    'native_constant_invocation' => false,
 ]);
 
 return $config;
diff --git a/composer.json b/composer.json
index 33311a3..e8ca03b 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,6 @@
         "php": "^8.4",
         "ext-bcmath": "*",
         "ext-filter": "*",
-        "amphp/byte-stream": "^2.1",
         "nette/php-generator": "4.2.1",
         "thesis/package-version": "0.1.2",
         "thesis/protobuf": "^0.1.6",
@@ -32,9 +31,6 @@
         "phpunit/phpunit": "^12.4",
         "symfony/var-dumper": "^8.0"
     },
-    "conflict": {
-        "revolt/event-loop": "<0.2.5"
-    },
     "autoload": {
         "psr-4": {
             "Thesis\\Protoc\\": "src/"
diff --git a/src/Io/ReadStreamInput.php b/src/Io/ReadStreamInput.php
index 372492c..95ce132 100644
--- a/src/Io/ReadStreamInput.php
+++ b/src/Io/ReadStreamInput.php
@@ -4,7 +4,6 @@
 
 namespace Thesis\Protoc\Io;
 
-use Amp\ByteStream;
 use Thesis\Protoc\Exception\InvalidInput;
 use Thesis\Protoc\ReadInput;
 
@@ -16,10 +15,12 @@
     #[\Override]
     public function read(): string
     {
-        try {
-            return ByteStream\buffer(ByteStream\getStdin());
-        } catch (ByteStream\BufferException $e) {
-            throw new InvalidInput($e->getMessage(), $e->getCode(), $e);
+        $contents = stream_get_contents(\STDIN);
+
+        if ($contents === false) {
+            throw new InvalidInput('Failed to read from STDIN');
         }
+
+        return $contents;
     }
 }
diff --git a/src/Io/WriteStreamOutput.php b/src/Io/WriteStreamOutput.php
index 2a0cb89..272d00c 100644
--- a/src/Io/WriteStreamOutput.php
+++ b/src/Io/WriteStreamOutput.php
@@ -4,7 +4,6 @@
 
 namespace Thesis\Protoc\Io;
 
-use Amp\ByteStream;
 use Thesis\Protoc\WriteOutput;
 
 /**
@@ -15,6 +14,6 @@
     #[\Override]
     public function write(string $buffer): void
     {
-        ByteStream\getStdout()->write($buffer);
+        fwrite(\STDOUT, $buffer);
     }
 }