diff --git a/.github/workflows/grumphp.yml b/.github/workflows/grumphp.yml
index 4ea9118..d29b133 100644
--- a/.github/workflows/grumphp.yml
+++ b/.github/workflows/grumphp.yml
@@ -7,7 +7,7 @@ jobs:
         strategy:
             matrix:
                 operating-system: [ubuntu-latest, macos-latest, windows-latest]
-                php-versions: ['8.0', '8.1']
+                php-versions: ['8.2', '8.3']
                 composer-options: ['', '--prefer-lowest']
         name: PHP ${{ matrix.php-versions }} @ ${{ matrix.operating-system }} ${{ matrix.composer-options }}
         steps:
diff --git a/.php-cs-fixer.dist.php b/.php-cs-fixer.dist.php
index be0e89a..f44c4f7 100644
--- a/.php-cs-fixer.dist.php
+++ b/.php-cs-fixer.dist.php
@@ -27,7 +27,7 @@
         'doctrine_annotation_braces' => true,
         'doctrine_annotation_indentation' => true,
         'doctrine_annotation_spaces' => true,
-        'escape_implicit_backslashes' => true,
+        'string_implicit_backslashes' => true,
         'explicit_indirect_variable' => true,
         'explicit_string_variable' => true,
         'final_internal_class' => false,
@@ -42,7 +42,7 @@
         'multiline_whitespace_before_semicolons' => true,
         'native_function_invocation' => false,
         'no_alias_functions' => true,
-        'no_blank_lines_before_namespace' => false,
+        'blank_lines_before_namespace' => true,
         'no_extra_blank_lines' => true,
         'no_null_property_initialization' => true,
         'no_php4_constructor' => true,
diff --git a/composer.json b/composer.json
index cbd0b12..cc490c9 100644
--- a/composer.json
+++ b/composer.json
@@ -7,16 +7,15 @@
     "prefer-stable": true,
     "require": {
         "php": "^8.0",
-        "symfony/http-kernel": "^4.3 || ~5.0 || ~6.0",
-        "symfony/messenger": "^4.3 || ~5.0 || ~6.0"
+        "symfony/http-kernel": "^4.3 || ~5.0 || ~6.0 || ~7.0",
+        "symfony/messenger": "^4.3 || ~5.0 || ~6.0 || ~7.0"
     },
     "require-dev": {
-        "friendsofphp/php-cs-fixer": "~3.5",
-        "nikic/php-parser": "^4.0",
-        "phpro/grumphp": "^1.5",
-        "phpunit/phpunit": "^9.0",
+        "friendsofphp/php-cs-fixer": "~3.58",
+        "phpro/grumphp": "^2.0",
+        "phpunit/phpunit": "^9.0 || ^10.0 || ^11.0",
         "roave/security-advisories": "dev-master",
-        "symfony/process": "^4.0 || ~5.0 || ~6.0"
+        "symfony/process": "^4.0 || ~5.0 || ~6.0 || ~7.0"
     },
     "autoload": {
         "psr-4": {