diff --git a/src/PhpGitHooks/Application/PhpUnit/PhpUnitHandler.php b/src/PhpGitHooks/Application/PhpUnit/PhpUnitHandler.php
index abb561b..7f68007 100644
--- a/src/PhpGitHooks/Application/PhpUnit/PhpUnitHandler.php
+++ b/src/PhpGitHooks/Application/PhpUnit/PhpUnitHandler.php
@@ -15,7 +15,7 @@
 class PhpUnitHandler extends ToolHandler
 {
     /** @var PhpUnitProcessBuilder  */
-    private $phpUnitProcessBuilder;
+    protected $phpUnitProcessBuilder;
 
     /**
      * @param OutputHandlerInterface  $outputHandler
@@ -37,7 +37,7 @@ public function run(array $messages)
     {
         $this->setTitle();
 
-        $processBuilder = $this->phpUnitProcessBuilder->getProcessBuilder();
+        $processBuilder = $this->processBuilder();
         $processBuilder->setTimeout(3600);
         $phpunit = $processBuilder->getProcess();
         $this->phpUnitProcessBuilder
@@ -49,6 +49,14 @@ public function run(array $messages)
         }
     }
 
+    /**
+     * @return \Symfony\Component\Process\ProcessBuilder
+     */
+    protected function processBuilder()
+    {
+        return $this->phpUnitProcessBuilder->getProcessBuilder($this->getBinPath('phpunit'));
+    }
+
     private function setTitle()
     {
         $this->outputHandler->setTitle('Running unit tests');
diff --git a/src/PhpGitHooks/Application/PhpUnit/PhpUnitRandomizerHandler.php b/src/PhpGitHooks/Application/PhpUnit/PhpUnitRandomizerHandler.php
index 7ac4332..ee39b4f 100644
--- a/src/PhpGitHooks/Application/PhpUnit/PhpUnitRandomizerHandler.php
+++ b/src/PhpGitHooks/Application/PhpUnit/PhpUnitRandomizerHandler.php
@@ -4,4 +4,11 @@
 
 class PhpUnitRandomizerHandler extends PhpUnitHandler
 {
+    /**
+     * @return \Symfony\Component\Process\ProcessBuilder
+     */
+    protected function processBuilder()
+    {
+        return $this->phpUnitProcessBuilder->getProcessBuilder($this->getBinPath('phpunit-randomizer'));
+    }
 }
diff --git a/src/PhpGitHooks/Infrastructure/CodeSniffer/CodeSnifferHandler.php b/src/PhpGitHooks/Infrastructure/CodeSniffer/CodeSnifferHandler.php
index 6bc9e9b..d9f1c38 100644
--- a/src/PhpGitHooks/Infrastructure/CodeSniffer/CodeSnifferHandler.php
+++ b/src/PhpGitHooks/Infrastructure/CodeSniffer/CodeSnifferHandler.php
@@ -54,7 +54,14 @@ public function run(array $messages)
             }
 
             if (false === $this->ignoreFiles->isIgnored($file)) {
-                $processBuilder = new ProcessBuilder(array('php', 'bin/phpcs', '--standard='.$this->standard, $file));
+                $processBuilder = new ProcessBuilder(
+                    array(
+                        'php',
+                        $this->getBinPath('phpcs'),
+                        '--standard='.$this->standard,
+                        $file,
+                    )
+                );
                 /** @var Process $phpCs */
                 $phpCs = $processBuilder->getProcess();
                 $phpCs->run();
diff --git a/src/PhpGitHooks/Infrastructure/Common/ProcessBuilderInterface.php b/src/PhpGitHooks/Infrastructure/Common/ProcessBuilderInterface.php
index e39cd79..eb271ca 100644
--- a/src/PhpGitHooks/Infrastructure/Common/ProcessBuilderInterface.php
+++ b/src/PhpGitHooks/Infrastructure/Common/ProcessBuilderInterface.php
@@ -12,9 +12,11 @@
 interface ProcessBuilderInterface
 {
     /**
+     * @param string $bin
+     *
      * @return ProcessBuilder
      */
-    public function getProcessBuilder();
+    public function getProcessBuilder($bin);
 
     /**
      * @param Process         $process
diff --git a/src/PhpGitHooks/Infrastructure/Common/ToolHandler.php b/src/PhpGitHooks/Infrastructure/Common/ToolHandler.php
index 1e05dfa..1ef232e 100644
--- a/src/PhpGitHooks/Infrastructure/Common/ToolHandler.php
+++ b/src/PhpGitHooks/Infrastructure/Common/ToolHandler.php
@@ -10,17 +10,40 @@
  */
 abstract class ToolHandler
 {
+    const COMPOSER_VENDOR_DIR = '/../../../../../../';
+    const COMPOSER_INSTALLED_FILE = 'composer/installed.json';
+
     /** @var OutputHandlerInterface  */
     protected $outputHandler;
     /** @var  OutputInterface */
     protected $output;
 
+    /** @var array */
+    private $tools = array(
+        'phpcs' => 'squizlabs/php_codesniffer',
+        'php-cs-fixer' => 'fabpot/php-cs-fixer',
+        'phpmd' => 'phpmd/phpmd',
+        'phpunit' => 'phpunit/phpunit',
+        'phpunit-randomizer' => 'fiunchinho/phpunit-randomizer',
+        'jsonlint' => 'seld/jsonlint',
+    );
+    /** @var array */
+    private $installedPackages = array();
+
     /**
      * @param OutputHandlerInterface $outputHandler
      */
     public function __construct(OutputHandlerInterface $outputHandler)
     {
         $this->outputHandler = $outputHandler;
+
+        $installedJson = dirname(__FILE__).self::COMPOSER_VENDOR_DIR.self::COMPOSER_INSTALLED_FILE;
+        if (file_exists($installedJson)) { // else not installed over composer
+            $packages = json_decode(file_get_contents($installedJson), true);
+            foreach ($packages as $package) {
+                $this->installedPackages[$package['name']] = $package;
+            }
+        }
     }
 
     /**
@@ -40,4 +63,23 @@ protected function writeOutputError(\Exception $exceptionClass, $errorText)
         ErrorOutput::write($errorText);
         throw new $exceptionClass();
     }
+
+    /**
+     * @param string $tool
+     *
+     * @return string
+     */
+    protected function getBinPath($tool)
+    {
+        if (isset($this->installedPackages[$this->tools[$tool]])) {
+            $package = $this->installedPackages[$this->tools[$tool]];
+            foreach ($package['bin'] as $bin) {
+                if (preg_match("#${tool}$#", $bin)) {
+                    return dirname(__FILE__).self::COMPOSER_VENDOR_DIR.$package['name'].DIRECTORY_SEPARATOR.$bin;
+                }
+            }
+        }
+
+        return 'bin'.DIRECTORY_SEPARATOR.$tool;
+    }
 }
diff --git a/src/PhpGitHooks/Infrastructure/JsonLint/JsonLintHandler.php b/src/PhpGitHooks/Infrastructure/JsonLint/JsonLintHandler.php
index 06f1e7f..7036264 100644
--- a/src/PhpGitHooks/Infrastructure/JsonLint/JsonLintHandler.php
+++ b/src/PhpGitHooks/Infrastructure/JsonLint/JsonLintHandler.php
@@ -34,7 +34,7 @@ public function run(array $messages)
             $processBuilder = new ProcessBuilder(
                 array(
                     'php',
-                    'bin/jsonlint',
+                    $this->getBinPath('jsonlint'),
                     $file,
                 )
             );
diff --git a/src/PhpGitHooks/Infrastructure/PhpCsFixer/PhpCsFixerHandler.php b/src/PhpGitHooks/Infrastructure/PhpCsFixer/PhpCsFixerHandler.php
index 4412bb1..e1c9e0f 100644
--- a/src/PhpGitHooks/Infrastructure/PhpCsFixer/PhpCsFixerHandler.php
+++ b/src/PhpGitHooks/Infrastructure/PhpCsFixer/PhpCsFixerHandler.php
@@ -58,7 +58,7 @@ public function run(array $messages)
                         $processBuilder = new ProcessBuilder(
                             array(
                                 'php',
-                                'bin/php-cs-fixer',
+                                $this->getBinPath('php-cs-fixer'),
                                 '--dry-run',
                                 'fix',
                                 $file,
diff --git a/src/PhpGitHooks/Infrastructure/PhpMD/PhpMDHandler.php b/src/PhpGitHooks/Infrastructure/PhpMD/PhpMDHandler.php
index 8bd95ad..234a77d 100644
--- a/src/PhpGitHooks/Infrastructure/PhpMD/PhpMDHandler.php
+++ b/src/PhpGitHooks/Infrastructure/PhpMD/PhpMDHandler.php
@@ -56,7 +56,7 @@ public function run(array $messages)
                 $processBuilder = new ProcessBuilder(
                     array(
                         'php',
-                        'bin/phpmd',
+                        $this->getBinPath('phpmd'),
                         $file,
                         'text',
                         'PmdRules.xml',
diff --git a/src/PhpGitHooks/Infrastructure/PhpUnit/PhpUnitProcessBuilder.php b/src/PhpGitHooks/Infrastructure/PhpUnit/PhpUnitProcessBuilder.php
index 259cb86..1958688 100644
--- a/src/PhpGitHooks/Infrastructure/PhpUnit/PhpUnitProcessBuilder.php
+++ b/src/PhpGitHooks/Infrastructure/PhpUnit/PhpUnitProcessBuilder.php
@@ -13,11 +13,13 @@
 class PhpUnitProcessBuilder implements ProcessBuilderInterface
 {
     /**
+     * @param string $bin
+     *
      * @return ProcessBuilder
      */
-    public function getProcessBuilder()
+    public function getProcessBuilder($bin)
     {
-        return new ProcessBuilder(array('php', 'bin/phpunit'));
+        return new ProcessBuilder(array('php', $bin));
     }
 
     /**
diff --git a/src/PhpGitHooks/Infrastructure/PhpUnit/PhpUnitRandomizerProcessBuilder.php b/src/PhpGitHooks/Infrastructure/PhpUnit/PhpUnitRandomizerProcessBuilder.php
index 5abf327..186dd4a 100644
--- a/src/PhpGitHooks/Infrastructure/PhpUnit/PhpUnitRandomizerProcessBuilder.php
+++ b/src/PhpGitHooks/Infrastructure/PhpUnit/PhpUnitRandomizerProcessBuilder.php
@@ -7,10 +7,12 @@
 final class PhpUnitRandomizerProcessBuilder extends PhpUnitProcessBuilder
 {
     /**
+     * @param string $bin
+     *
      * @return ProcessBuilder
      */
-    public function getProcessBuilder()
+    public function getProcessBuilder($bin)
     {
-        return new ProcessBuilder(array('php', 'bin/phpunit-randomizer', '--order', 'rand'));
+        return new ProcessBuilder(array('php', $bin, '--order', 'rand'));
     }
 }