diff --git a/composer.lock b/composer.lock
index 55f3f4b..567293a 100644
--- a/composer.lock
+++ b/composer.lock
@@ -141,16 +141,16 @@
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+            "version": "6.3.3",
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                 "url": "https://github.com/guzzle/guzzle.git",
-                "reference": "68d0ea14d5a3f42a20e87632a5f84931e2709c90"
+                "reference": "407b0cb880ace85c9b63c5f9551db498cb2d50ba"
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-                "reference": "68d0ea14d5a3f42a20e87632a5f84931e2709c90",
+                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/407b0cb880ace85c9b63c5f9551db498cb2d50ba",
+                "reference": "407b0cb880ace85c9b63c5f9551db498cb2d50ba",
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@@ -160,7 +160,7 @@
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-                "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.4",
+                "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.4 || ^7.0",
                 "psr/log": "^1.0"
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@@ -202,7 +202,7 @@
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-            "time": "2018-03-26T16:33:04+00:00"
+            "time": "2018-04-22T15:46:56+00:00"
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@@ -1745,23 +1745,23 @@
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-            "version": "1.7.5",
+            "version": "1.7.6",
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-                "reference": "dfd6be44111a7c41c2e884a336cc4f461b3b2401"
+                "reference": "33a7e3c4fda54e912ff6338c48823bd5c0f0b712"
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-                "reference": "dfd6be44111a7c41c2e884a336cc4f461b3b2401",
+                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/33a7e3c4fda54e912ff6338c48823bd5c0f0b712",
+                "reference": "33a7e3c4fda54e912ff6338c48823bd5c0f0b712",
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                 "php": "^5.3|^7.0",
                 "phpdocumentor/reflection-docblock": "^2.0|^3.0.2|^4.0",
-                "sebastian/comparator": "^1.1|^2.0",
+                "sebastian/comparator": "^1.1|^2.0|^3.0",
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@@ -1804,7 +1804,7 @@
                 "spy",
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-            "time": "2018-02-19T10:16:54+00:00"
+            "time": "2018-04-18T13:57:24+00:00"
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@@ -2016,16 +2016,16 @@
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+            "version": "6.5.8",
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                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "6bd77b57707c236833d2b57b968e403df060c9d9"
+                "reference": "4f21a3c6b97c42952fd5c2837bb354ec0199b97b"
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-                "reference": "6bd77b57707c236833d2b57b968e403df060c9d9",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/4f21a3c6b97c42952fd5c2837bb354ec0199b97b",
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@@ -2096,7 +2096,7 @@
                 "testing",
                 "xunit"
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-            "time": "2018-02-26T07:01:09+00:00"
+            "time": "2018-04-10T11:38:34+00:00"
         },
         {
             "name": "phpunit/phpunit-mock-objects",