diff --git a/composer.json b/composer.json
index 938e9ff..c6ce459 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
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     "doctrine/common": "dev-master#a45d110f71c323e29f41eb0696fa230e3fa1b1b5",
     "doctrine/annotations": "1.2.*",
-    "guzzlehttp/guzzle": "5.0.*",
+    "guzzlehttp/guzzle": "~5.0",
     "kriswallsmith/assetic": "1.1.*@alpha",
     "symfony-cmf/routing": "1.2.*",
     "easyrdf/easyrdf": "0.8.*",
@@ -30,7 +30,6 @@
     "stack/builder": "1.0.*",
     "egulias/email-validator": "1.2.*"
   },
-  "minimum-stability": "dev",
   "autoload": {
     "psr-4": {
       "Drupal\\Core\\": "core/lib/Drupal/Core",
diff --git a/composer.lock b/composer.lock
index 0a034ec..98e8627 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "9ce7caf3d86076109fa933bc1d328a3a",
+    "hash": "27aa103761ed4c03caa9b50bb19db230",
     "packages": [
         {
             "name": "doctrine/annotations",
@@ -510,16 +510,16 @@
         },
         {
             "name": "guzzlehttp/guzzle",
-            "version": "dev-ring",
+            "version": "5.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/guzzle.git",
-                "reference": "53069ad061f23a284d4f26f0fd367ff043633f5a"
+                "reference": "28b51e11237f25cdb0efaea8e45af26007831aa9"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/53069ad061f23a284d4f26f0fd367ff043633f5a",
-                "reference": "53069ad061f23a284d4f26f0fd367ff043633f5a",
+                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/28b51e11237f25cdb0efaea8e45af26007831aa9",
+                "reference": "28b51e11237f25cdb0efaea8e45af26007831aa9",
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             },
             "require": {
@@ -564,11 +564,11 @@
                 "rest",
                 "web service"
             ],
-            "time": "2014-10-13 02:30:59"
+            "time": "2014-10-13 03:05:51"
         },
         {
             "name": "guzzlehttp/ringphp",
-            "version": "dev-master",
+            "version": "1.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/RingPHP.git",
@@ -618,16 +618,16 @@
         },
         {
             "name": "guzzlehttp/streams",
-            "version": "dev-master",
+            "version": "3.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/streams.git",
-                "reference": "48be63a56ea8a98ec620eb59ef76bcab77feba55"
+                "reference": "47aaa48e27dae43d39fc1cea0ccf0d84ac1a2ba5"
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             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/streams/zipball/48be63a56ea8a98ec620eb59ef76bcab77feba55",
-                "reference": "48be63a56ea8a98ec620eb59ef76bcab77feba55",
+                "url": "https://api.github.com/repos/guzzle/streams/zipball/47aaa48e27dae43d39fc1cea0ccf0d84ac1a2ba5",
+                "reference": "47aaa48e27dae43d39fc1cea0ccf0d84ac1a2ba5",
                 "shasum": ""
             },
             "require": {
@@ -664,7 +664,7 @@
                 "Guzzle",
                 "stream"
             ],
-            "time": "2014-10-12 19:45:36"
+            "time": "2014-10-12 19:18:40"
         },
         {
             "name": "kriswallsmith/assetic",
@@ -1194,16 +1194,16 @@
         },
         {
             "name": "react/promise",
-            "version": "dev-master",
+            "version": "v2.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/reactphp/promise.git",
-                "reference": "f1e10638e9fa06c5ae901f6af8a2a73b96d4cdcb"
+                "reference": "58129a9cb9da88f2055309a805e2696b06928bb0"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/reactphp/promise/zipball/f1e10638e9fa06c5ae901f6af8a2a73b96d4cdcb",
-                "reference": "f1e10638e9fa06c5ae901f6af8a2a73b96d4cdcb",
+                "url": "https://api.github.com/repos/reactphp/promise/zipball/58129a9cb9da88f2055309a805e2696b06928bb0",
+                "reference": "58129a9cb9da88f2055309a805e2696b06928bb0",
                 "shasum": ""
             },
             "require": {
@@ -1216,11 +1216,11 @@
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "React\\Promise\\": "src/"
+                "psr-0": {
+                    "React\\Promise": "src/"
                 },
                 "files": [
-                    "src/functions.php"
+                    "src/React/Promise/functions.php"
                 ]
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -1230,11 +1230,13 @@
             "authors": [
                 {
                     "name": "Jan Sorgalla",
-                    "email": "jsorgalla@googlemail.com"
+                    "email": "jsorgalla@googlemail.com",
+                    "homepage": "http://sorgalla.com",
+                    "role": "maintainer"
                 }
             ],
             "description": "A lightweight implementation of CommonJS Promises/A for PHP",
-            "time": "2014-10-05 19:47:05"
+            "time": "2013-12-10 15:40:36"
         },
         {
             "name": "sdboyer/gliph",
@@ -2569,7 +2571,7 @@
     ],
     "packages-dev": [],
     "aliases": [],
-    "minimum-stability": "dev",
+    "minimum-stability": "stable",
     "stability-flags": {
         "symfony/yaml": 20,
         "doctrine/common": 20,
@@ -2578,7 +2580,7 @@
     },
     "prefer-stable": false,
     "platform": {
-        "php": ">5.4.13"
+        "php": ">=5.4.5"
     },
     "platform-dev": []
 }