diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 7dd95b4..af7c148 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -15,7 +15,7 @@ jobs:
         name: Check code meets standards and tests pass (by localhost config)
         runs-on: ubuntu-latest
         env:
-            PHP_VERSION: '7.1'
+            PHP_VERSION: '7.2'
         steps:
             -   uses: actions/checkout@v2
 
@@ -46,13 +46,13 @@ jobs:
         name: Run only tests on PHP ${{ matrix.php }} on ${{ matrix.os }} with ${{ matrix.deps-level }} ${{ matrix.symfony }} dependency level
         runs-on: ${{ matrix.os }}
         env:
-            COMPOSER_ALL_DEV_DEPENDENCIES_WITHOUT_PHPUNIT: phing/phing phpstan/phpstan php-parallel-lint/php-parallel-lint shopsys/coding-standards symfony/var-dumper symplify/easy-coding-standard phpstan/phpstan-phpunit
+            COMPOSER_ALL_DEV_DEPENDENCIES_WITHOUT_PHPUNIT: phing/phing php-parallel-lint/php-parallel-lint phpstan/phpstan phpstan/phpstan-phpunit shopsys/coding-standards symfony/var-dumper
         strategy:
             matrix:
                 os: [ 'ubuntu-latest', 'macos-latest', 'windows-latest' ]
-                php: [ '7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3' ]
+                php: [ '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3' ]
                 deps-level: [ 'lowest', 'highest' ]
-                symfony: [ '^3.4.31', '^4.0.10', '^5.0', '^6.0', '^7.0' ]
+                symfony: [ '^4.2.0', '^5.0', '^6.0', '^7.0' ]
                 exclude:
                     # symfony/console fails on "YamlStandards\Command\YamlCommandTest::testCorrectRunCommandForFix -> Trying to access array offset on value of type int" and I think it's not necessary fix it, so I skip it
                     -   php: '7.4'
@@ -62,10 +62,6 @@ jobs:
                     -   php: '7.3'
                         os: 'macos-latest'
                     # don't run check symfony versions without supported php
-                    -   php: '7.1'
-                        symfony: '^5.0'
-                    -   php: '7.1'
-                        symfony: '^6.0'
                     -   php: '7.2'
                         symfony: '^6.0'
                     -   php: '7.3'
diff --git a/.gitignore b/.gitignore
index ef916b6..645c7d1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /composer.lock
 .php_cs.cache
 /.idea
+.phpunit.result.cache
diff --git a/composer.json b/composer.json
index ded0cc1..803b506 100644
--- a/composer.json
+++ b/composer.json
@@ -26,23 +26,27 @@
         }
     },
     "require": {
-        "php": "^7.1 || ^8.0",
-        "symfony/console": "^3.4.31 || ^4.0.10 || ^5.0 || ^6.0 || ^7.0",
-        "symfony/config": "^3.4.31 || ^4.0.10 || ^5.0 || ^6.0 || ^7.0",
-        "symfony/yaml": "^3.4.31 || ^4.0.10 || ^5.0 || ^6.0 || ^7.0",
-        "sebastian/diff": "^1.4 || ^2.0 || ^3.0 || ^4.0 || ^5.0"
+        "php": "^7.2 || ^8.0",
+        "symfony/console": "^4.2.0 || ^5.0 || ^6.0 || ^7.0",
+        "symfony/config": "^4.2.0 || ^5.0 || ^6.0 || ^7.0",
+        "symfony/yaml": "^4.2.0 || ^5.0 || ^6.0 || ^7.0",
+        "sebastian/diff": "^3.0 || ^4.0 || ^5.0"
     },
     "require-dev": {
-        "phing/phing": "^2.16.4",
-        "phpstan/phpstan": "^0.12",
-        "php-parallel-lint/php-parallel-lint": "^1.3.1",
-        "phpunit/phpunit": "^7.5 || ^9.0",
-        "shopsys/coding-standards": "^7.3",
-        "symfony/var-dumper": "^3.4 || ^4.3 || ^5.0 || ^6.0",
-        "symplify/easy-coding-standard": "^5.4.3",
-        "phpstan/phpstan-phpunit": "^0.12.1"
+        "phing/phing": "^2.17.4",
+        "php-parallel-lint/php-parallel-lint": "^1.3.2",
+        "phpstan/phpstan": "^0.12.100",
+        "phpstan/phpstan-phpunit": "^0.12.22",
+        "phpunit/phpunit": "^8.5.14 || ^9.0 || ^10.0",
+        "shopsys/coding-standards": "^9.1.3",
+        "symfony/var-dumper": "^5.4.29"
     },
     "bin": [
         "bin/yaml-standards"
-    ]
+    ],
+    "config": {
+        "allow-plugins": {
+            "dealerdirect/phpcodesniffer-composer-installer": true
+        }
+    }
 }
diff --git a/docker/Dockerfile b/docker/Dockerfile
index fcf7a77..428c63c 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:7.1-fpm-buster as base
+FROM php:7.2-fpm-buster as base
 
 ARG project_root=.
 
diff --git a/src/Model/Config/YamlStandardConfigDefinition.php b/src/Model/Config/YamlStandardConfigDefinition.php
index 0a16b77..a2ea57a 100644
--- a/src/Model/Config/YamlStandardConfigDefinition.php
+++ b/src/Model/Config/YamlStandardConfigDefinition.php
@@ -38,14 +38,8 @@ public function getConfigTreeBuilder(): TreeBuilder
     {
         $treeBuilder = new TreeBuilder('yaml_standards_config');
 
-        // fix for Symfony 4.2 and newer versions
-        if (method_exists($treeBuilder, 'getRootNode')) {
-            /** @var \Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition $rootNode */
-            $rootNode = $treeBuilder->getRootNode();
-        } else {
-            /** @var \Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition $rootNode */
-            $rootNode = /** @scrutinizer ignore-deprecated */ $treeBuilder->root('yaml_standards_config');
-        }
+        /** @var \Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition $rootNode */
+        $rootNode = $treeBuilder->getRootNode();
 
         $this->buildItemsNode($rootNode->arrayPrototype());