diff --git a/WebProfilerServiceProvider.php b/WebProfilerServiceProvider.php
index 1c23910e..4fa10bc6 100644
--- a/WebProfilerServiceProvider.php
+++ b/WebProfilerServiceProvider.php
@@ -237,7 +237,7 @@ public function register(Container $app)
         }
 
         $app['web_profiler.controller.profiler'] = function ($app) use ($baseDir) {
-            return new ProfilerController($app['url_generator'], $app['profiler'], $app['twig'], $app['data_collector.templates'], $app['web_profiler.debug_toolbar.position'], null, $baseDir);
+            return new ProfilerController($app['url_generator'], $app['profiler'], $app['twig'], $app['data_collector.templates'], null, $baseDir);
         };
 
         $app['web_profiler.controller.router'] = function ($app) {
@@ -251,7 +251,7 @@ public function register(Container $app)
         $app['web_profiler.toolbar.listener'] = function ($app) {
             $mode = $app['web_profiler.debug_toolbar.enable'] ? WebDebugToolbarListener::ENABLED : WebDebugToolbarListener::DISABLED;
 
-            return new WebDebugToolbarListener($app['twig'], $app['web_profiler.debug_toolbar.intercept_redirects'], $mode, $app['web_profiler.debug_toolbar.position'], $app['url_generator']);
+            return new WebDebugToolbarListener($app['twig'], $app['web_profiler.debug_toolbar.intercept_redirects'], $mode, $app['url_generator']);
         };
 
         $app['profiler'] = function ($app) {
@@ -272,7 +272,6 @@ public function register(Container $app)
         $app['profiler.only_exceptions'] = false;
         $app['profiler.only_master_requests'] = false;
         $app['web_profiler.debug_toolbar.enable'] = true;
-        $app['web_profiler.debug_toolbar.position'] = 'bottom';
         $app['web_profiler.debug_toolbar.intercept_redirects'] = false;
 
         $app['profiler.listener'] = function ($app) {
diff --git a/composer.json b/composer.json
index b5ca9ee1..853a3ed0 100644
--- a/composer.json
+++ b/composer.json
@@ -11,22 +11,23 @@
     ],
     "require": {
         "silex/silex": "^2.0",
-        "symfony/web-profiler-bundle": "^2.8|^3.0",
-        "symfony/twig-bundle": "^2.8|^3.0",
-        "symfony/twig-bridge": "^2.8|^3.0",
-        "symfony/stopwatch": "^2.8|^3.0"
+        "symfony/web-profiler-bundle": "^4.0",
+        "symfony/twig-bundle": "^4.0",
+        "symfony/twig-bridge": "^4.0",
+        "symfony/stopwatch": "^4.0"
     },
     "conflict": {
         "symfony/web-profiler-bundle": "3.1.0"
     },
     "require-dev": {
-        "symfony/browser-kit": "^2.8|^3.0",
-        "symfony/css-selector": "^2.8|^3.0",
-        "symfony/debug-bundle": "^2.8|^3.0",
+        "phpunit/phpunit": "4.x|5.x",
+        "symfony/browser-kit": "^4.0",
+        "symfony/css-selector": "^4.0",
+        "symfony/debug-bundle": "^4.0",
         "symfony/phpunit-bridge": "~3.2",
-        "symfony/security": "^2.8|^3.0",
-        "symfony/security-bundle": "^2.8|^3.0",
-        "symfony/translation": "^2.8|^3.0"
+        "symfony/security": "^4.0",
+        "symfony/security-bundle": "^4.0",
+        "symfony/translation": "^4.0"
     },
     "autoload": {
         "psr-4": { "Silex\\Provider\\": "" }