diff --git a/EventListener/ClassLoaderListener.php b/EventListener/ClassLoaderListener.php
old mode 100755
new mode 100644
diff --git a/Relay/Mutation/MutationFieldDefinition.php b/Relay/Mutation/MutationFieldDefinition.php
index 8f5c26ad4..04c040e2f 100644
--- a/Relay/Mutation/MutationFieldDefinition.php
+++ b/Relay/Mutation/MutationFieldDefinition.php
@@ -11,9 +11,7 @@
 
 namespace Overblog\GraphQLBundle\Relay\Mutation;
 
-use GraphQL\Type\Definition\Config;
 use Overblog\GraphQLBundle\Definition\Builder\MappingInterface;
-use Overblog\GraphQLBundle\Definition\Type;
 
 class MutationFieldDefinition implements MappingInterface
 {
diff --git a/Relay/Node/GlobalIdFieldDefinition.php b/Relay/Node/GlobalIdFieldDefinition.php
index ed86c68d1..423716671 100644
--- a/Relay/Node/GlobalIdFieldDefinition.php
+++ b/Relay/Node/GlobalIdFieldDefinition.php
@@ -12,7 +12,6 @@
 namespace Overblog\GraphQLBundle\Relay\Node;
 
 use Overblog\GraphQLBundle\Definition\Builder\MappingInterface;
-use Overblog\GraphQLBundle\Definition\Type;
 
 class GlobalIdFieldDefinition implements MappingInterface
 {
diff --git a/Relay/Node/NodeFieldDefinition.php b/Relay/Node/NodeFieldDefinition.php
index 9fb870b6d..04f7a8f24 100644
--- a/Relay/Node/NodeFieldDefinition.php
+++ b/Relay/Node/NodeFieldDefinition.php
@@ -11,9 +11,7 @@
 
 namespace Overblog\GraphQLBundle\Relay\Node;
 
-use GraphQL\Type\Definition\Config;
 use Overblog\GraphQLBundle\Definition\Builder\MappingInterface;
-use Overblog\GraphQLBundle\Definition\Type;
 
 class NodeFieldDefinition implements MappingInterface
 {
diff --git a/Relay/Node/PluralIdentifyingRootFieldDefinition.php b/Relay/Node/PluralIdentifyingRootFieldDefinition.php
index 146561bee..79cc09d9a 100644
--- a/Relay/Node/PluralIdentifyingRootFieldDefinition.php
+++ b/Relay/Node/PluralIdentifyingRootFieldDefinition.php
@@ -11,9 +11,7 @@
 
 namespace Overblog\GraphQLBundle\Relay\Node;
 
-use GraphQL\Type\Definition\Config;
 use Overblog\GraphQLBundle\Definition\Builder\MappingInterface;
-use Overblog\GraphQLBundle\Definition\Type;
 
 class PluralIdentifyingRootFieldDefinition implements MappingInterface
 {
diff --git a/Request/Executor.php b/Request/Executor.php
index 520bddb64..ca8400035 100644
--- a/Request/Executor.php
+++ b/Request/Executor.php
@@ -12,7 +12,6 @@
 namespace Overblog\GraphQLBundle\Request;
 
 use GraphQL\GraphQL;
-use GraphQL\Language\Source;
 use GraphQL\Schema;
 use GraphQL\Validator\DocumentValidator;
 use GraphQL\Validator\Rules\QueryComplexity;
diff --git a/Request/ParserInterface.php b/Request/ParserInterface.php
index 13b10c2aa..7cd78138d 100644
--- a/Request/ParserInterface.php
+++ b/Request/ParserInterface.php
@@ -12,7 +12,6 @@
 namespace Overblog\GraphQLBundle\Request;
 
 use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
 
 interface ParserInterface
 {
@@ -30,8 +29,6 @@ interface ParserInterface
      *
      * @param Request $request
      *
-     * @throw BadRequestHttpException
-     *
      * @return array
      */
     public function parse(Request $request);
diff --git a/composer.json b/composer.json
index f4e28f111..bcf693406 100644
--- a/composer.json
+++ b/composer.json
@@ -35,7 +35,7 @@
         "twig/twig": "If you want to use graphiQL."
     },
     "require-dev": {
-        "fabpot/php-cs-fixer": "^1.11",
+        "friendsofphp/php-cs-fixer": "^1.11",
         "sensio/framework-extra-bundle": "^3.0.13",
         "sllh/php-cs-fixer-styleci-bridge": "^1.5",
         "symfony/browser-kit": "^2.7|^3.0",