diff --git a/composer.lock b/composer.lock
index 73c4e90..262509b 100644
--- a/composer.lock
+++ b/composer.lock
@@ -101,21 +101,21 @@
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                 "url": "https://github.com/guzzle/guzzle.git",
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@@ -159,7 +159,7 @@
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-            "time": "2016-10-08T15:01:37+00:00"
+            "time": "2017-02-28T22:50:30+00:00"
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@@ -214,16 +214,16 @@
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+            "version": "1.4.1",
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                 "url": "https://github.com/guzzle/psr7.git",
-                "reference": "04a6d1a00ea5da0727ee94309a9f0d3dbaecb569"
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@@ -275,7 +275,7 @@
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@@ -1277,27 +1277,27 @@
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+            "version": "v1.7.0",
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                 "url": "https://github.com/phpspec/prophecy.git",
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-                "reference": "6c52c2722f8460122f96f86346600e1077ce22cb",
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-                "sebastian/comparator": "^1.1",
-                "sebastian/recursion-context": "^1.0|^2.0"
+                "sebastian/comparator": "^1.1|^2.0",
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@@ -1336,39 +1336,39 @@
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-            "time": "2016-11-21T14:58:47+00:00"
+            "time": "2017-03-02T20:05:34+00:00"
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+            "version": "4.0.7",
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-                "phpunit/php-file-iterator": "~1.3",
-                "phpunit/php-text-template": "~1.2",
+                "phpunit/php-file-iterator": "^1.3",
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-                "sebastian/code-unit-reverse-lookup": "~1.0",
+                "sebastian/code-unit-reverse-lookup": "^1.0",
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-                "sebastian/version": "~1.0|~2.0"
+                "sebastian/version": "^1.0 || ^2.0"
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-                "ext-xdebug": ">=2.1.4",
-                "phpunit/phpunit": "^5.4"
+                "ext-xdebug": "^2.1.4",
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-                "ext-xdebug": ">=2.4.0",
-                "ext-xmlwriter": "*"
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@@ -1399,7 +1399,7 @@
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-            "time": "2017-02-23T07:38:02+00:00"
+            "time": "2017-03-01T09:12:17+00:00"
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@@ -1491,25 +1491,30 @@
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+            "version": "1.0.9",
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+                "php": "^5.3.3 || ^7.0"
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+                "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.0"
             },
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+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0-dev"
+                }
+            },
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@@ -1531,20 +1536,20 @@
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-            "time": "2016-05-12T18:03:57+00:00"
+            "time": "2017-02-26T11:10:40+00:00"
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+            "version": "1.4.11",
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@@ -1580,20 +1585,20 @@
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-            "time": "2017-02-23T06:14:45+00:00"
+            "time": "2017-02-27T10:12:30+00:00"
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         {
             "name": "phpunit/phpunit",
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+            "version": "5.7.15",
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                 "url": "https://github.com/sebastianbergmann/phpunit.git",
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@@ -1662,7 +1667,7 @@
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-            "time": "2017-02-19T07:22:16+00:00"
+            "time": "2017-03-02T15:22:43+00:00"
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