diff --git a/composer.json b/composer.json
index 5aa092fee..07d8c9f50 100644
--- a/composer.json
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diff --git a/composer.lock b/composer.lock
index f54f98347..d51131509 100644
--- a/composer.lock
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@@ -1190,20 +1195,20 @@
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@@ -1562,7 +1570,7 @@
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@@ -1607,28 +1615,28 @@
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@@ -1652,33 +1660,33 @@
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@@ -1893,30 +1842,30 @@
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+                "url": "https://api.github.com/repos/sebastianbergmann/comparator/zipball/5de4fc177adf9bce8df98d8d141a7559d7ccf6da",
+                "reference": "5de4fc177adf9bce8df98d8d141a7559d7ccf6da",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.0",
-                "sebastian/diff": "^2.0 || ^3.0",
+                "php": "^7.1",
+                "sebastian/diff": "^3.0",
                 "sebastian/exporter": "^3.1"
             },
             "require-dev": {
-                "phpunit/phpunit": "^6.4"
+                "phpunit/phpunit": "^7.1"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.1.x-dev"
+                    "dev-master": "3.0-dev"
                 }
             },
             "autoload": {
@@ -1953,32 +1902,35 @@
                 "compare",
                 "equality"
             ],
-            "time": "2018-02-01T13:46:46+00:00"
+            "time": "2018-07-12T15:12:46+00:00"
         },
         {
             "name": "sebastian/environment",
-            "version": "3.1.0",
+            "version": "4.1.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/environment.git",
-                "reference": "cd0871b3975fb7fc44d11314fd1ee20925fce4f5"
+                "reference": "6fda8ce1974b62b14935adc02a9ed38252eca656"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/environment/zipball/cd0871b3975fb7fc44d11314fd1ee20925fce4f5",
-                "reference": "cd0871b3975fb7fc44d11314fd1ee20925fce4f5",
+                "url": "https://api.github.com/repos/sebastianbergmann/environment/zipball/6fda8ce1974b62b14935adc02a9ed38252eca656",
+                "reference": "6fda8ce1974b62b14935adc02a9ed38252eca656",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.0"
+                "php": "^7.1"
             },
             "require-dev": {
-                "phpunit/phpunit": "^6.1"
+                "phpunit/phpunit": "^7.5"
+            },
+            "suggest": {
+                "ext-posix": "*"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.1.x-dev"
+                    "dev-master": "4.1-dev"
                 }
             },
             "autoload": {
@@ -2003,7 +1955,7 @@
                 "environment",
                 "hhvm"
             ],
-            "time": "2017-07-01T08:51:00+00:00"
+            "time": "2019-02-01T05:27:49+00:00"
         },
         {
             "name": "sebastian/exporter",
@@ -2270,25 +2222,25 @@
         },
         {
             "name": "sebastian/resource-operations",
-            "version": "1.0.0",
+            "version": "2.0.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/resource-operations.git",
-                "reference": "ce990bb21759f94aeafd30209e8cfcdfa8bc3f52"
+                "reference": "4d7a795d35b889bf80a0cc04e08d77cedfa917a9"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/resource-operations/zipball/ce990bb21759f94aeafd30209e8cfcdfa8bc3f52",
-                "reference": "ce990bb21759f94aeafd30209e8cfcdfa8bc3f52",
+                "url": "https://api.github.com/repos/sebastianbergmann/resource-operations/zipball/4d7a795d35b889bf80a0cc04e08d77cedfa917a9",
+                "reference": "4d7a795d35b889bf80a0cc04e08d77cedfa917a9",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.6.0"
+                "php": "^7.1"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.0.x-dev"
+                    "dev-master": "2.0-dev"
                 }
             },
             "autoload": {
@@ -2308,7 +2260,7 @@
             ],
             "description": "Provides a list of PHP built-in functions that operate on resources",
             "homepage": "https://www.github.com/sebastianbergmann/resource-operations",
-            "time": "2015-07-28T20:34:47+00:00"
+            "time": "2018-10-04T04:07:39+00:00"
         },
         {
             "name": "sebastian/version",
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index cb3e714ad..f3b8ea83a 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -3,6 +3,7 @@
          xsi:noNamespaceSchemaLocation="./vendor/phpunit/phpunit/phpunit.xsd"
          bootstrap="./vendor/autoload.php"
          colors="true"
+         executionOrder="random"
          verbose="true"
 >
     <testsuites>
diff --git a/tests/Fixtures/e2e/Example_Test/composer.json b/tests/Fixtures/e2e/Example_Test/composer.json
index b54b1a9ff..cc936b362 100644
--- a/tests/Fixtures/e2e/Example_Test/composer.json
+++ b/tests/Fixtures/e2e/Example_Test/composer.json
@@ -1,6 +1,6 @@
 {
     "require-dev": {
-        "phpunit/phpunit": "^6.5"
+        "phpunit/phpunit": "^7.5"
     },
     "autoload": {
         "psr-4": {
diff --git a/tests/Fixtures/e2e/Save_PHPUnit_Bootstrap_File/composer.json b/tests/Fixtures/e2e/Save_PHPUnit_Bootstrap_File/composer.json
index 6a54dc5e8..a4aa79db0 100644
--- a/tests/Fixtures/e2e/Save_PHPUnit_Bootstrap_File/composer.json
+++ b/tests/Fixtures/e2e/Save_PHPUnit_Bootstrap_File/composer.json
@@ -1,11 +1,11 @@
 {
     "config": {
         "platform": {
-            "php": "7.0"
+            "php": "7.1"
         }
     },
     "require-dev": {
-        "phpunit/phpunit": "^6.5"
+        "phpunit/phpunit": "^7.5"
     },
     "autoload": {
         "psr-4": {
diff --git a/tests/TestFramework/PhpUnit/Config/XmlConfigurationHelperTest.php b/tests/TestFramework/PhpUnit/Config/XmlConfigurationHelperTest.php
index 6b0bb35f9..221e14bad 100644
--- a/tests/TestFramework/PhpUnit/Config/XmlConfigurationHelperTest.php
+++ b/tests/TestFramework/PhpUnit/Config/XmlConfigurationHelperTest.php
@@ -535,7 +535,7 @@ public function test_it_passes_validation_by_xsd(string $xsdSchema): void
 
         $xmlHelper = new XmlConfigurationHelper($this->getPathReplacer(), '');
 
-        $this->assertTrue(true, $xmlHelper->validate($dom, $xPath));
+        $this->assertTrue($xmlHelper->validate($dom, $xPath));
     }
 
     public function test_it_removes_default_test_suite(): void