diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 0ae292782..4040da8c3 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -105,11 +105,11 @@ jobs:
 
       - name: "Run tests"
         if: "matrix.php-version != '7.3'"
-        run: "SYMFONY_PHPUNIT_VERSION=8.5 vendor/bin/simple-phpunit --verbose"
+        run: "vendor/bin/simple-phpunit --verbose"
 
       - name: "Run complete test suite on 7.3"
         if: "matrix.php-version == '7.3'"
-        run: "SYMFONY_PHPUNIT_VERSION=8.5 vendor/bin/simple-phpunit --configuration tests/complete.phpunit.xml"
+        run: "vendor/bin/simple-phpunit --configuration tests/complete.phpunit.xml"
 
   validation:
     name: "Composer validation"
diff --git a/.github/workflows/phpstan.yml b/.github/workflows/phpstan.yml
index cc40f0163..0488fa089 100644
--- a/.github/workflows/phpstan.yml
+++ b/.github/workflows/phpstan.yml
@@ -21,7 +21,8 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "7.4"
+          - "7.2"
+          - "8.1"
 
     steps:
       - name: "Checkout"
@@ -46,8 +47,16 @@ jobs:
           key: "php-${{ matrix.php-version }}-symfony-php-unit-version-${{ env.SYMFONY_PHPUNIT_VERSION }}-${{ hashFiles('**/composer.lock') }}"
           restore-keys: "php-${{ matrix.php-version }}-symfony-php-unit-version-${{ env.SYMFONY_PHPUNIT_VERSION }}"
 
-      - name: "Install highest dependencies from composer.json using composer binary provided by system"
+      - name: "Install highest dependencies"
+        if: "matrix.php-version != '7.2'"
         run: "composer config platform --unset && composer update ${{ env.COMPOSER_FLAGS }}"
 
+      - name: "Install locked dependencies"
+        if: "matrix.php-version == '7.2'"
+        run: "composer config platform --unset && composer update ${{ env.COMPOSER_FLAGS }}"
+
+      - name: "Initialize PHPUnit sources"
+        run: "vendor/bin/simple-phpunit --filter NO_TEST_JUST_AUTOLOAD_THANKS"
+
       - name: "Run PHPStan"
         run: "composer phpstan"
diff --git a/composer.json b/composer.json
index 2cbbc6aac..f9e24e15b 100644
--- a/composer.json
+++ b/composer.json
@@ -21,6 +21,9 @@
             "homepage": "https://seld.be"
         }
     ],
+    "_comment": [
+        "symfony/polyfill-php73 sould be removed once https://github.com/symfony/symfony/pull/44523 is released and the symfony/console requirement bumped to match that release"
+    ],
     "require": {
         "php": "^7.2.5 || ^8.0",
         "composer/ca-bundle": "^1.0",
@@ -36,8 +39,9 @@
         "symfony/filesystem": "^5.4 || ^6.0",
         "symfony/finder": "^5.4 || ^6.0",
         "symfony/process": "^5.4 || ^6.0",
-        "react/promise": "^2.7",
-        "composer/pcre": "^1.0"
+        "react/promise": "^2.8",
+        "composer/pcre": "^1.0",
+        "symfony/polyfill-php73": "^1.9"
     },
     "require-dev": {
         "symfony/phpunit-bridge": "^6.0",
@@ -45,8 +49,7 @@
         "phpstan/phpstan": "^1.0",
         "phpstan/phpstan-phpunit": "^1.0",
         "phpstan/phpstan-deprecation-rules": "^1",
-        "phpstan/phpstan-strict-rules": "^1",
-        "phpunit/phpunit": "^8.5"
+        "phpstan/phpstan-strict-rules": "^1"
     },
     "suggest": {
         "ext-openssl": "Enabling the openssl extension allows you to access https URLs for repositories and packages",
diff --git a/composer.lock b/composer.lock
index a8a5857b0..5c34ed2ce 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "84679af67d11fbadffda53328d7fe1b7",
+    "content-hash": "21b7ce031989ab306ee91098fa461436",
     "packages": [
         {
             "name": "composer/ca-bundle",
@@ -1859,172 +1859,6 @@
             ],
             "time": "2020-11-10T18:47:58+00:00"
         },
-        {
-            "name": "myclabs/deep-copy",
-            "version": "1.10.2",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "776f831124e9c62e1a2c601ecc52e776d8bb7220"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/776f831124e9c62e1a2c601ecc52e776d8bb7220",
-                "reference": "776f831124e9c62e1a2c601ecc52e776d8bb7220",
-                "shasum": ""
-            },
-            "require": {
-                "php": "^7.1 || ^8.0"
-            },
-            "require-dev": {
-                "doctrine/collections": "^1.0",
-                "doctrine/common": "^2.6",
-                "phpunit/phpunit": "^7.1"
-            },
-            "type": "library",
-            "autoload": {
-                "psr-4": {
-                    "DeepCopy\\": "src/DeepCopy/"
-                },
-                "files": [
-                    "src/DeepCopy/deep_copy.php"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "description": "Create deep copies (clones) of your objects",
-            "keywords": [
-                "clone",
-                "copy",
-                "duplicate",
-                "object",
-                "object graph"
-            ],
-            "support": {
-                "issues": "https://github.com/myclabs/DeepCopy/issues",
-                "source": "https://github.com/myclabs/DeepCopy/tree/1.10.2"
-            },
-            "funding": [
-                {
-                    "url": "https://tidelift.com/funding/github/packagist/myclabs/deep-copy",
-                    "type": "tidelift"
-                }
-            ],
-            "time": "2020-11-13T09:40:50+00:00"
-        },
-        {
-            "name": "phar-io/manifest",
-            "version": "2.0.3",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/phar-io/manifest.git",
-                "reference": "97803eca37d319dfa7826cc2437fc020857acb53"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/phar-io/manifest/zipball/97803eca37d319dfa7826cc2437fc020857acb53",
-                "reference": "97803eca37d319dfa7826cc2437fc020857acb53",
-                "shasum": ""
-            },
-            "require": {
-                "ext-dom": "*",
-                "ext-phar": "*",
-                "ext-xmlwriter": "*",
-                "phar-io/version": "^3.0.1",
-                "php": "^7.2 || ^8.0"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "2.0.x-dev"
-                }
-            },
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Arne Blankerts",
-                    "email": "arne@blankerts.de",
-                    "role": "Developer"
-                },
-                {
-                    "name": "Sebastian Heuer",
-                    "email": "sebastian@phpeople.de",
-                    "role": "Developer"
-                },
-                {
-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de",
-                    "role": "Developer"
-                }
-            ],
-            "description": "Component for reading phar.io manifest information from a PHP Archive (PHAR)",
-            "support": {
-                "issues": "https://github.com/phar-io/manifest/issues",
-                "source": "https://github.com/phar-io/manifest/tree/2.0.3"
-            },
-            "time": "2021-07-20T11:28:43+00:00"
-        },
-        {
-            "name": "phar-io/version",
-            "version": "3.1.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/phar-io/version.git",
-                "reference": "bae7c545bef187884426f042434e561ab1ddb182"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/phar-io/version/zipball/bae7c545bef187884426f042434e561ab1ddb182",
-                "reference": "bae7c545bef187884426f042434e561ab1ddb182",
-                "shasum": ""
-            },
-            "require": {
-                "php": "^7.2 || ^8.0"
-            },
-            "type": "library",
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Arne Blankerts",
-                    "email": "arne@blankerts.de",
-                    "role": "Developer"
-                },
-                {
-                    "name": "Sebastian Heuer",
-                    "email": "sebastian@phpeople.de",
-                    "role": "Developer"
-                },
-                {
-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de",
-                    "role": "Developer"
-                }
-            ],
-            "description": "Library for handling version information and constraints",
-            "support": {
-                "issues": "https://github.com/phar-io/version/issues",
-                "source": "https://github.com/phar-io/version/tree/3.1.0"
-            },
-            "time": "2021-02-23T14:00:09+00:00"
-        },
         {
             "name": "phpdocumentor/reflection-common",
             "version": "2.2.0",
@@ -2472,455 +2306,6 @@
             },
             "time": "2021-11-18T09:30:29+00:00"
         },
-        {
-            "name": "phpunit/php-code-coverage",
-            "version": "7.0.15",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
-                "reference": "819f92bba8b001d4363065928088de22f25a3a48"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/819f92bba8b001d4363065928088de22f25a3a48",
-                "reference": "819f92bba8b001d4363065928088de22f25a3a48",
-                "shasum": ""
-            },
-            "require": {
-                "ext-dom": "*",
-                "ext-xmlwriter": "*",
-                "php": ">=7.2",
-                "phpunit/php-file-iterator": "^2.0.2",
-                "phpunit/php-text-template": "^1.2.1",
-                "phpunit/php-token-stream": "^3.1.3 || ^4.0",
-                "sebastian/code-unit-reverse-lookup": "^1.0.1",
-                "sebastian/environment": "^4.2.2",
-                "sebastian/version": "^2.0.1",
-                "theseer/tokenizer": "^1.1.3"
-            },
-            "require-dev": {
-                "phpunit/phpunit": "^8.2.2"
-            },
-            "suggest": {
-                "ext-xdebug": "^2.7.2"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "7.0-dev"
-                }
-            },
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de",
-                    "role": "lead"
-                }
-            ],
-            "description": "Library that provides collection, processing, and rendering functionality for PHP code coverage information.",
-            "homepage": "https://github.com/sebastianbergmann/php-code-coverage",
-            "keywords": [
-                "coverage",
-                "testing",
-                "xunit"
-            ],
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/php-code-coverage/issues",
-                "source": "https://github.com/sebastianbergmann/php-code-coverage/tree/7.0.15"
-            },
-            "funding": [
-                {
-                    "url": "https://github.com/sebastianbergmann",
-                    "type": "github"
-                }
-            ],
-            "time": "2021-07-26T12:20:09+00:00"
-        },
-        {
-            "name": "phpunit/php-file-iterator",
-            "version": "2.0.5",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/sebastianbergmann/php-file-iterator.git",
-                "reference": "42c5ba5220e6904cbfe8b1a1bda7c0cfdc8c12f5"
-            },
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-                "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-file-iterator/zipball/42c5ba5220e6904cbfe8b1a1bda7c0cfdc8c12f5",
-                "reference": "42c5ba5220e6904cbfe8b1a1bda7c0cfdc8c12f5",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=7.1"
-            },
-            "require-dev": {
-                "phpunit/phpunit": "^8.5"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "2.0.x-dev"
-                }
-            },
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de",
-                    "role": "lead"
-                }
-            ],
-            "description": "FilterIterator implementation that filters files based on a list of suffixes.",
-            "homepage": "https://github.com/sebastianbergmann/php-file-iterator/",
-            "keywords": [
-                "filesystem",
-                "iterator"
-            ],
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/php-file-iterator/issues",
-                "source": "https://github.com/sebastianbergmann/php-file-iterator/tree/2.0.5"
-            },
-            "funding": [
-                {
-                    "url": "https://github.com/sebastianbergmann",
-                    "type": "github"
-                }
-            ],
-            "time": "2021-12-02T12:42:26+00:00"
-        },
-        {
-            "name": "phpunit/php-text-template",
-            "version": "1.2.1",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/sebastianbergmann/php-text-template.git",
-                "reference": "31f8b717e51d9a2afca6c9f046f5d69fc27c8686"
-            },
-            "dist": {
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-                "url": "https://api.github.com/repos/sebastianbergmann/php-text-template/zipball/31f8b717e51d9a2afca6c9f046f5d69fc27c8686",
-                "reference": "31f8b717e51d9a2afca6c9f046f5d69fc27c8686",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3.3"
-            },
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-            "autoload": {
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-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
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-            ],
-            "authors": [
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-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de",
-                    "role": "lead"
-                }
-            ],
-            "description": "Simple template engine.",
-            "homepage": "https://github.com/sebastianbergmann/php-text-template/",
-            "keywords": [
-                "template"
-            ],
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/php-text-template/issues",
-                "source": "https://github.com/sebastianbergmann/php-text-template/tree/1.2.1"
-            },
-            "time": "2015-06-21T13:50:34+00:00"
-        },
-        {
-            "name": "phpunit/php-timer",
-            "version": "2.1.3",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/sebastianbergmann/php-timer.git",
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-            },
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-            "extra": {
-                "branch-alias": {
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-                }
-            },
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-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de",
-                    "role": "lead"
-                }
-            ],
-            "description": "Utility class for timing",
-            "homepage": "https://github.com/sebastianbergmann/php-timer/",
-            "keywords": [
-                "timer"
-            ],
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/php-timer/issues",
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-            },
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-                    "type": "github"
-                }
-            ],
-            "time": "2020-11-30T08:20:02+00:00"
-        },
-        {
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-            "version": "3.1.3",
-            "source": {
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-                "phpunit/phpunit": "^7.0"
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-            "extra": {
-                "branch-alias": {
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-            "autoload": {
-                "classmap": [
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-            "authors": [
-                {
-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de"
-                }
-            ],
-            "description": "Wrapper around PHP's tokenizer extension.",
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-            "keywords": [
-                "tokenizer"
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-            "support": {
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-            ],
-            "abandoned": true,
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-                "ext-xmlwriter": "*",
-                "myclabs/deep-copy": "^1.10.0",
-                "phar-io/manifest": "^2.0.3",
-                "phar-io/version": "^3.0.2",
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-                "phpspec/prophecy": "^1.10.3",
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-                "sebastian/version": "^2.0.1"
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-            "require-dev": {
-                "ext-pdo": "*"
-            },
-            "suggest": {
-                "ext-soap": "*",
-                "ext-xdebug": "*",
-                "phpunit/php-invoker": "^2.0.0"
-            },
-            "bin": [
-                "phpunit"
-            ],
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "8.5-dev"
-                }
-            },
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de",
-                    "role": "lead"
-                }
-            ],
-            "description": "The PHP Unit Testing framework.",
-            "homepage": "https://phpunit.de/",
-            "keywords": [
-                "phpunit",
-                "testing",
-                "xunit"
-            ],
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/phpunit/issues",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/8.5.21"
-            },
-            "funding": [
-                {
-                    "url": "https://phpunit.de/donate.html",
-                    "type": "custom"
-                },
-                {
-                    "url": "https://github.com/sebastianbergmann",
-                    "type": "github"
-                }
-            ],
-            "time": "2021-09-25T07:37:20+00:00"
-        },
-        {
-            "name": "sebastian/code-unit-reverse-lookup",
-            "version": "1.0.2",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/sebastianbergmann/code-unit-reverse-lookup.git",
-                "reference": "1de8cd5c010cb153fcd68b8d0f64606f523f7619"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/code-unit-reverse-lookup/zipball/1de8cd5c010cb153fcd68b8d0f64606f523f7619",
-                "reference": "1de8cd5c010cb153fcd68b8d0f64606f523f7619",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.6"
-            },
-            "require-dev": {
-                "phpunit/phpunit": "^8.5"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.0.x-dev"
-                }
-            },
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de"
-                }
-            ],
-            "description": "Looks up which function or method a line of code belongs to",
-            "homepage": "https://github.com/sebastianbergmann/code-unit-reverse-lookup/",
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/code-unit-reverse-lookup/issues",
-                "source": "https://github.com/sebastianbergmann/code-unit-reverse-lookup/tree/1.0.2"
-            },
-            "funding": [
-                {
-                    "url": "https://github.com/sebastianbergmann",
-                    "type": "github"
-                }
-            ],
-            "time": "2020-11-30T08:15:22+00:00"
-        },
         {
             "name": "sebastian/comparator",
             "version": "3.0.3",
@@ -3061,69 +2446,6 @@
             ],
             "time": "2020-11-30T07:59:04+00:00"
         },
-        {
-            "name": "sebastian/environment",
-            "version": "4.2.4",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/sebastianbergmann/environment.git",
-                "reference": "d47bbbad83711771f167c72d4e3f25f7fcc1f8b0"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/environment/zipball/d47bbbad83711771f167c72d4e3f25f7fcc1f8b0",
-                "reference": "d47bbbad83711771f167c72d4e3f25f7fcc1f8b0",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=7.1"
-            },
-            "require-dev": {
-                "phpunit/phpunit": "^7.5"
-            },
-            "suggest": {
-                "ext-posix": "*"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "4.2-dev"
-                }
-            },
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de"
-                }
-            ],
-            "description": "Provides functionality to handle HHVM/PHP environments",
-            "homepage": "http://www.github.com/sebastianbergmann/environment",
-            "keywords": [
-                "Xdebug",
-                "environment",
-                "hhvm"
-            ],
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/environment/issues",
-                "source": "https://github.com/sebastianbergmann/environment/tree/4.2.4"
-            },
-            "funding": [
-                {
-                    "url": "https://github.com/sebastianbergmann",
-                    "type": "github"
-                }
-            ],
-            "time": "2020-11-30T07:53:42+00:00"
-        },
         {
             "name": "sebastian/exporter",
             "version": "3.1.4",
@@ -3201,182 +2523,6 @@
             ],
             "time": "2021-11-11T13:51:24+00:00"
         },
-        {
-            "name": "sebastian/global-state",
-            "version": "3.0.1",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/sebastianbergmann/global-state.git",
-                "reference": "474fb9edb7ab891665d3bfc6317f42a0a150454b"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/global-state/zipball/474fb9edb7ab891665d3bfc6317f42a0a150454b",
-                "reference": "474fb9edb7ab891665d3bfc6317f42a0a150454b",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=7.2",
-                "sebastian/object-reflector": "^1.1.1",
-                "sebastian/recursion-context": "^3.0"
-            },
-            "require-dev": {
-                "ext-dom": "*",
-                "phpunit/phpunit": "^8.0"
-            },
-            "suggest": {
-                "ext-uopz": "*"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "3.0-dev"
-                }
-            },
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de"
-                }
-            ],
-            "description": "Snapshotting of global state",
-            "homepage": "http://www.github.com/sebastianbergmann/global-state",
-            "keywords": [
-                "global state"
-            ],
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/global-state/issues",
-                "source": "https://github.com/sebastianbergmann/global-state/tree/3.0.1"
-            },
-            "funding": [
-                {
-                    "url": "https://github.com/sebastianbergmann",
-                    "type": "github"
-                }
-            ],
-            "time": "2020-11-30T07:43:24+00:00"
-        },
-        {
-            "name": "sebastian/object-enumerator",
-            "version": "3.0.4",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/sebastianbergmann/object-enumerator.git",
-                "reference": "e67f6d32ebd0c749cf9d1dbd9f226c727043cdf2"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/object-enumerator/zipball/e67f6d32ebd0c749cf9d1dbd9f226c727043cdf2",
-                "reference": "e67f6d32ebd0c749cf9d1dbd9f226c727043cdf2",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=7.0",
-                "sebastian/object-reflector": "^1.1.1",
-                "sebastian/recursion-context": "^3.0"
-            },
-            "require-dev": {
-                "phpunit/phpunit": "^6.0"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "3.0.x-dev"
-                }
-            },
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de"
-                }
-            ],
-            "description": "Traverses array structures and object graphs to enumerate all referenced objects",
-            "homepage": "https://github.com/sebastianbergmann/object-enumerator/",
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/object-enumerator/issues",
-                "source": "https://github.com/sebastianbergmann/object-enumerator/tree/3.0.4"
-            },
-            "funding": [
-                {
-                    "url": "https://github.com/sebastianbergmann",
-                    "type": "github"
-                }
-            ],
-            "time": "2020-11-30T07:40:27+00:00"
-        },
-        {
-            "name": "sebastian/object-reflector",
-            "version": "1.1.2",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/sebastianbergmann/object-reflector.git",
-                "reference": "9b8772b9cbd456ab45d4a598d2dd1a1bced6363d"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/object-reflector/zipball/9b8772b9cbd456ab45d4a598d2dd1a1bced6363d",
-                "reference": "9b8772b9cbd456ab45d4a598d2dd1a1bced6363d",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=7.0"
-            },
-            "require-dev": {
-                "phpunit/phpunit": "^6.0"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.1-dev"
-                }
-            },
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de"
-                }
-            ],
-            "description": "Allows reflection of object attributes, including inherited and non-public ones",
-            "homepage": "https://github.com/sebastianbergmann/object-reflector/",
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/object-reflector/issues",
-                "source": "https://github.com/sebastianbergmann/object-reflector/tree/1.1.2"
-            },
-            "funding": [
-                {
-                    "url": "https://github.com/sebastianbergmann",
-                    "type": "github"
-                }
-            ],
-            "time": "2020-11-30T07:37:18+00:00"
-        },
         {
             "name": "sebastian/recursion-context",
             "version": "3.0.1",
@@ -3440,161 +2586,6 @@
             ],
             "time": "2020-11-30T07:34:24+00:00"
         },
-        {
-            "name": "sebastian/resource-operations",
-            "version": "2.0.2",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/sebastianbergmann/resource-operations.git",
-                "reference": "31d35ca87926450c44eae7e2611d45a7a65ea8b3"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/resource-operations/zipball/31d35ca87926450c44eae7e2611d45a7a65ea8b3",
-                "reference": "31d35ca87926450c44eae7e2611d45a7a65ea8b3",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=7.1"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "2.0-dev"
-                }
-            },
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de"
-                }
-            ],
-            "description": "Provides a list of PHP built-in functions that operate on resources",
-            "homepage": "https://www.github.com/sebastianbergmann/resource-operations",
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/resource-operations/issues",
-                "source": "https://github.com/sebastianbergmann/resource-operations/tree/2.0.2"
-            },
-            "funding": [
-                {
-                    "url": "https://github.com/sebastianbergmann",
-                    "type": "github"
-                }
-            ],
-            "time": "2020-11-30T07:30:19+00:00"
-        },
-        {
-            "name": "sebastian/type",
-            "version": "1.1.4",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/sebastianbergmann/type.git",
-                "reference": "0150cfbc4495ed2df3872fb31b26781e4e077eb4"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/type/zipball/0150cfbc4495ed2df3872fb31b26781e4e077eb4",
-                "reference": "0150cfbc4495ed2df3872fb31b26781e4e077eb4",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=7.2"
-            },
-            "require-dev": {
-                "phpunit/phpunit": "^8.2"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.1-dev"
-                }
-            },
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de",
-                    "role": "lead"
-                }
-            ],
-            "description": "Collection of value objects that represent the types of the PHP type system",
-            "homepage": "https://github.com/sebastianbergmann/type",
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/type/issues",
-                "source": "https://github.com/sebastianbergmann/type/tree/1.1.4"
-            },
-            "funding": [
-                {
-                    "url": "https://github.com/sebastianbergmann",
-                    "type": "github"
-                }
-            ],
-            "time": "2020-11-30T07:25:11+00:00"
-        },
-        {
-            "name": "sebastian/version",
-            "version": "2.0.1",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/sebastianbergmann/version.git",
-                "reference": "99732be0ddb3361e16ad77b68ba41efc8e979019"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/version/zipball/99732be0ddb3361e16ad77b68ba41efc8e979019",
-                "reference": "99732be0ddb3361e16ad77b68ba41efc8e979019",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.6"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "2.0.x-dev"
-                }
-            },
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Sebastian Bergmann",
-                    "email": "sebastian@phpunit.de",
-                    "role": "lead"
-                }
-            ],
-            "description": "Library that helps with managing the version number of Git-hosted PHP projects",
-            "homepage": "https://github.com/sebastianbergmann/version",
-            "support": {
-                "issues": "https://github.com/sebastianbergmann/version/issues",
-                "source": "https://github.com/sebastianbergmann/version/tree/master"
-            },
-            "time": "2016-10-03T07:35:21+00:00"
-        },
         {
             "name": "symfony/phpunit-bridge",
             "version": "v6.0.0",
@@ -3678,56 +2669,6 @@
             ],
             "time": "2021-11-29T15:32:57+00:00"
         },
-        {
-            "name": "theseer/tokenizer",
-            "version": "1.2.1",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/theseer/tokenizer.git",
-                "reference": "34a41e998c2183e22995f158c581e7b5e755ab9e"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/theseer/tokenizer/zipball/34a41e998c2183e22995f158c581e7b5e755ab9e",
-                "reference": "34a41e998c2183e22995f158c581e7b5e755ab9e",
-                "shasum": ""
-            },
-            "require": {
-                "ext-dom": "*",
-                "ext-tokenizer": "*",
-                "ext-xmlwriter": "*",
-                "php": "^7.2 || ^8.0"
-            },
-            "type": "library",
-            "autoload": {
-                "classmap": [
-                    "src/"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Arne Blankerts",
-                    "email": "arne@blankerts.de",
-                    "role": "Developer"
-                }
-            ],
-            "description": "A small library for converting tokenized PHP source code into XML and potentially other formats",
-            "support": {
-                "issues": "https://github.com/theseer/tokenizer/issues",
-                "source": "https://github.com/theseer/tokenizer/tree/1.2.1"
-            },
-            "funding": [
-                {
-                    "url": "https://github.com/theseer",
-                    "type": "github"
-                }
-            ],
-            "time": "2021-07-28T10:34:58+00:00"
-        },
         {
             "name": "webmozart/assert",
             "version": "1.10.0",
@@ -3799,5 +2740,5 @@
     "platform-overrides": {
         "php": "7.2.5"
     },
-    "plugin-api-version": "2.1.0"
+    "plugin-api-version": "2.3.0"
 }
diff --git a/phpstan/config.neon b/phpstan/config.neon
index 457123ae3..916cc915f 100644
--- a/phpstan/config.neon
+++ b/phpstan/config.neon
@@ -52,6 +52,7 @@ parameters:
         - '~Dynamic call to static method PHPUnit\\Framework\\TestCase::(once|at|exactly|will|exactly|returnValue|returnCallback|any|atLeastOnce|throwException|onConsecutiveCalls|never|returnValueMap)\(\)~'
 
     bootstrapFiles:
+        - ./locate-phpunit-autoloader.php
         - ../tests/bootstrap.php
 
     paths:
diff --git a/phpstan/locate-phpunit-autoloader.php b/phpstan/locate-phpunit-autoloader.php
new file mode 100644
index 000000000..ec8251bb7
--- /dev/null
+++ b/phpstan/locate-phpunit-autoloader.php
@@ -0,0 +1,22 @@
+<?php
+
+$bestDirFound = null;
+$dirs = glob(__DIR__.'/../vendor/bin/.phpunit/phpunit-*');
+natsort($dirs);
+
+foreach (array_reverse($dirs) as $dir) {
+    $bestDirFound = $dir;
+    if (PHP_VERSION_ID >= 80000 && false !== strpos($dir, 'phpunit-9')) {
+        break;
+    }
+    if (PHP_VERSION_ID < 80000 && false !== strpos($dir, 'phpunit-8')) {
+        break;
+    }
+}
+
+if (null === $bestDirFound) {
+    echo 'Run "composer test" to initialize PHPUnit sources before running PHPStan'.PHP_EOL;
+    exit(1);
+}
+
+include $bestDirFound.'/vendor/autoload.php';