diff --git a/composer.json b/composer.json
index 85f7d8c..d4ad03a 100644
--- a/composer.json
+++ b/composer.json
@@ -14,14 +14,14 @@
     },
     "require": {
         "react/react": "~0.4",
-        "symfony/console": "~2.6",
-        "symfony/expression-language": "~2.6",
-        "symfony/debug": "~2.6"
+        "symfony/console": "~2.6|~3.0",
+        "symfony/expression-language": "~2.6|~3.0",
+        "symfony/debug": "~2.6|~3.0"
     },
     "require-dev": {
-        "symfony/finder": "~2.6",
+        "symfony/finder": "~2.6|~3.0",
         "phpunit/phpunit": "~4.4",
-        "symfony/process": "~2.6"
+        "symfony/process": "~2.6|~3.0"
     },
     "bin": ["pure"],
     "license": "MIT",
diff --git a/pure b/pure
index 34211d1..2e414b8 100755
--- a/pure
+++ b/pure
@@ -2,9 +2,9 @@
 <?php
 require __DIR__ . '/vendor/autoload.php';
 
-Symfony\Component\Debug\ErrorHandler::register(false);
+Symfony\Component\Debug\ErrorHandler::register();
 
-$console = new Symfony\Component\Console\Application('PurePHP', '1.1.0');
+$console = new Symfony\Component\Console\Application('PurePHP', '1.2.0');
 $console->add(new Pure\Console\StartCommand());
 $console->add(new Pure\Console\ClientCommand());
 $console->run();