diff --git a/composer.lock b/composer.lock
index 0a5a063..956bf35 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1074,16 +1074,16 @@
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+            "version": "4.3.1",
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                 "url": "https://github.com/phpDocumentor/ReflectionDocBlock.git",
-                "reference": "94fd0001232e47129dd3504189fa1c7225010d08"
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-                "reference": "94fd0001232e47129dd3504189fa1c7225010d08",
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@@ -1121,7 +1121,7 @@
                 }
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             "description": "With this component, a library can provide support for annotations via DocBlocks or otherwise retrieve information that is embedded in a DocBlock.",
-            "time": "2017-11-30T07:14:17+00:00"
+            "time": "2019-04-30T17:48:53+00:00"
         },
         {
             "name": "phpdocumentor/type-resolver",
@@ -1534,16 +1534,16 @@
         },
         {
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-            "version": "8.1.3",
+            "version": "8.1.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "2a676677982b484ee36b54961f570c02eabbe7e1"
+                "reference": "e3c9da6e645492c461e0a11eca117f83f4f4c840"
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-                "reference": "2a676677982b484ee36b54961f570c02eabbe7e1",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/e3c9da6e645492c461e0a11eca117f83f4f4c840",
+                "reference": "e3c9da6e645492c461e0a11eca117f83f4f4c840",
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             "require": {
@@ -1612,7 +1612,7 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2019-04-19T15:52:00+00:00"
+            "time": "2019-05-28T11:53:42+00:00"
         },
         {
             "name": "sebastian/code-unit-reverse-lookup",
@@ -1781,16 +1781,16 @@
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-            "version": "4.2.1",
+            "version": "4.2.2",
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                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/environment.git",
-                "reference": "3095910f0f0fb155ac4021fc51a4a7a39ac04e8a"
+                "reference": "f2a2c8e1c97c11ace607a7a667d73d47c19fe404"
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-                "url": "https://api.github.com/repos/sebastianbergmann/environment/zipball/3095910f0f0fb155ac4021fc51a4a7a39ac04e8a",
-                "reference": "3095910f0f0fb155ac4021fc51a4a7a39ac04e8a",
+                "url": "https://api.github.com/repos/sebastianbergmann/environment/zipball/f2a2c8e1c97c11ace607a7a667d73d47c19fe404",
+                "reference": "f2a2c8e1c97c11ace607a7a667d73d47c19fe404",
                 "shasum": ""
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             "require": {
@@ -1830,7 +1830,7 @@
                 "environment",
                 "hhvm"
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-            "time": "2019-04-25T07:55:20+00:00"
+            "time": "2019-05-05T09:05:15+00:00"
         },
         {
             "name": "sebastian/exporter",