diff --git a/composer.json b/composer.json
index a5262bd..bf9dcd0 100644
--- a/composer.json
+++ b/composer.json
@@ -7,15 +7,14 @@
 	"require": {
 		"smarty/smarty": "~3.1.29",
 		"rg3/youtube-dl": "2016.04.13",
-		"slim/slim": "~3.4.2",
+		"slim/slim": "3.x-dev",
 		"mathmarques/smarty-view": "~1.1.0",
 		"symfony/yaml": "~3.0.0",
 		"symfony/process": "~3.0.0",
 		"ptachoire/process-builder-chain": "~1.2.0",
 		"ffmpeg/ffmpeg": "dev-release",
 		"rudloff/smarty-plugin-noscheme": "~0.1.0",
-		"rudloff/rtmpdump-bin": "~2.3",
-		"rudloff/psr7-process-stream": "~0.1.0"
+		"rudloff/rtmpdump-bin": "~2.3"
 	},
 	"require-dev": {
 		"symfony/var-dumper": "~3.0.0"
diff --git a/composer.lock b/composer.lock
index 94b927c..e8224f9 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,8 +4,8 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "a030be591c13e040baf3e3ec52716722",
-    "content-hash": "9ca31c631675ba466325c5a04bff17c1",
+    "hash": "e173fa909efaf932dcbc99c365645eaf",
+    "content-hash": "54da2bfd3a8f04d66a1cd4465ec0a261",
     "packages": [
         {
             "name": "container-interop/container-interop",
@@ -48,64 +48,6 @@
             ],
             "type": "library"
         },
-        {
-            "name": "guzzlehttp/psr7",
-            "version": "1.3.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/guzzle/psr7.git",
-                "reference": "31382fef2889136415751badebbd1cb022a4ed72"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/psr7/zipball/31382fef2889136415751badebbd1cb022a4ed72",
-                "reference": "31382fef2889136415751badebbd1cb022a4ed72",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.4.0",
-                "psr/http-message": "~1.0"
-            },
-            "provide": {
-                "psr/http-message-implementation": "1.0"
-            },
-            "require-dev": {
-                "phpunit/phpunit": "~4.0"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.0-dev"
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "GuzzleHttp\\Psr7\\": "src/"
-                },
-                "files": [
-                    "src/functions_include.php"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Michael Dowling",
-                    "email": "mtdowling@gmail.com",
-                    "homepage": "https://github.com/mtdowling"
-                }
-            ],
-            "description": "PSR-7 message implementation",
-            "keywords": [
-                "http",
-                "message",
-                "stream",
-                "uri"
-            ],
-            "time": "2016-04-13 19:56:01"
-        },
         {
             "name": "jeremykendall/php-domain-parser",
             "version": "3.0.0",
@@ -466,39 +408,6 @@
             },
             "type": "library"
         },
-        {
-            "name": "rudloff/psr7-process-stream",
-            "version": "0.1.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/Rudloff/psr7-process-stream.git",
-                "reference": "055ecbdadee9b43904aed75d5a548c277cac10a8"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/Rudloff/psr7-process-stream/zipball/055ecbdadee9b43904aed75d5a548c277cac10a8",
-                "reference": "055ecbdadee9b43904aed75d5a548c277cac10a8",
-                "shasum": ""
-            },
-            "require": {
-                "guzzlehttp/psr7": "~1.3.0"
-            },
-            "require-dev": {
-                "symfony/var-dumper": "~3.0.0"
-            },
-            "type": "library",
-            "autoload": {
-                "psr-4": {
-                    "ProcessStream\\": "classes/"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "GPL-3.0"
-            ],
-            "description": "PSR-7 stream implementation that can be used to manage processes",
-            "time": "2016-04-14 10:36:10"
-        },
         {
             "name": "rudloff/rtmpdump-bin",
             "version": "2.3",
@@ -570,16 +479,16 @@
         },
         {
             "name": "slim/slim",
-            "version": "3.4.2",
+            "version": "3.x-dev",
             "source": {
                 "type": "git",
                 "url": "https://github.com/slimphp/Slim.git",
-                "reference": "a132385f736063d00632b52b3f8a389fe66fe4fa"
+                "reference": "30cfe3c07dac28ec1129c0577e64b90ba11a54c4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/slimphp/Slim/zipball/a132385f736063d00632b52b3f8a389fe66fe4fa",
-                "reference": "a132385f736063d00632b52b3f8a389fe66fe4fa",
+                "url": "https://api.github.com/repos/slimphp/Slim/zipball/30cfe3c07dac28ec1129c0577e64b90ba11a54c4",
+                "reference": "30cfe3c07dac28ec1129c0577e64b90ba11a54c4",
                 "shasum": ""
             },
             "require": {
@@ -636,7 +545,7 @@
                 "micro",
                 "router"
             ],
-            "time": "2016-05-25 11:23:38"
+            "time": "2016-05-26 08:20:33"
         },
         {
             "name": "smarty/smarty",
@@ -919,6 +828,7 @@
     "aliases": [],
     "minimum-stability": "stable",
     "stability-flags": {
+        "slim/slim": 20,
         "ffmpeg/ffmpeg": 20
     },
     "prefer-stable": false,
diff --git a/controllers/FrontController.php b/controllers/FrontController.php
index 15e00bb..1c8939a 100644
--- a/controllers/FrontController.php
+++ b/controllers/FrontController.php
@@ -16,7 +16,7 @@ use Alltube\VideoDownload;
 use Alltube\Config;
 use Symfony\Component\Process\ProcessBuilder;
 use Chain\Chain;
-use ProcessStream\PopenStream;
+use Slim\Http\Stream;
 
 /**
  * Main controller
@@ -200,7 +200,7 @@ class FrontController
                         $chain->add('|', $avconvProc);
                     }
                     if ($request->isGet()) {
-                        $response = $response->withBody(new PopenStream($chain->getProcess()->getCommandLine()));
+                        $response = $response->withBody(new Stream(popen($chain->getProcess()->getCommandLine(), 'r')));
                     }
                     return $response;
                 }