diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 07ec0cd..e38ebe9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,19 +13,25 @@ on:
 
 jobs:
   phpunit:
+    name: Tests (PHPUnit) L${{ matrix.laravel }}
+    runs-on: ubuntu-latest
     strategy:
       matrix:
-        laravel: [6, 8]
-
-    name: Tests (PHPUnit)
-    runs-on: ubuntu-latest
+        laravel: [6, 8, 9]
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Install composer dependencies
-      run: composer require "laravel/framework:^${{matrix.laravel}}.0.0"
-    - name: Run tests
-      run: vendor/bin/phpunit
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.0'
+
+      - name: Install dependencies
+        run: composer require "laravel/framework:^${{matrix.laravel}}.0"
+      - name: Run tests
+        run: vendor/bin/phpunit
 
   phpstan:
     name: Static analysis (PHPStan)
@@ -46,7 +52,7 @@ jobs:
       - name: Install php-cs-fixer
         run: composer global require friendsofphp/php-cs-fixer
       - name: Run php-cs-fixer
-        run: $HOME/.composer/vendor/bin/php-cs-fixer fix --config=.php_cs.php
+        run: $HOME/.composer/vendor/bin/php-cs-fixer fix --config=.php-cs-fixer.php
       - name: Commit changes from php-cs-fixer
         uses: EndBug/add-and-commit@v5
         with:
diff --git a/.gitignore b/.gitignore
index 649c3ac..acc3680 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 .phpunit.result.cache
 composer.lock
 vendor/
-.php_cs.cache
+.php-cs-fixer.cache
 .vscode/
diff --git a/.php_cs.php b/.php-cs-fixer.php
similarity index 87%
rename from .php_cs.php
rename to .php-cs-fixer.php
index 4d16d44..a96d781 100644
--- a/.php_cs.php
+++ b/.php-cs-fixer.php
@@ -10,22 +10,19 @@
         'operators' => [
             '=>' => null,
             '|' => 'no_space',
-        ]
+        ],
     ],
     'blank_line_after_namespace' => true,
     'blank_line_after_opening_tag' => true,
     'no_superfluous_phpdoc_tags' => true,
     'blank_line_before_statement' => [
-        'statements' => ['return']
+        'statements' => ['return'],
     ],
     'braces' => true,
     'cast_spaces' => true,
-    'class_attributes_separation' => [
-        'elements' => ['method']
-    ],
     'class_definition' => true,
     'concat_space' => [
-        'spacing' => 'one'
+        'spacing' => 'one',
     ],
     'declare_equal_normalize' => true,
     'elseif' => true,
@@ -42,7 +39,7 @@
     'linebreak_after_opening_tag' => true,
     'line_ending' => true,
     'lowercase_cast' => true,
-    'lowercase_constants' => true,
+    'constant_case' => true,
     'lowercase_keywords' => true,
     'lowercase_static_reference' => true, // added from Symfony
     'magic_method_casing' => true, // added from Symfony
@@ -56,7 +53,7 @@
             'throw',
             'use',
             'use_trait',
-        ]
+        ],
     ],
     'no_blank_lines_after_class_opening' => true,
     'no_blank_lines_after_phpdoc' => true,
@@ -66,11 +63,11 @@
     'no_leading_import_slash' => true,
     'no_leading_namespace_whitespace' => true,
     'no_mixed_echo_print' => [
-        'use' => 'echo'
+        'use' => 'echo',
     ],
     'no_multiline_whitespace_around_double_arrow' => true,
     'multiline_whitespace_before_semicolons' => [
-        'strategy' => 'no_multi_line'
+        'strategy' => 'no_multi_line',
     ],
     'no_short_bool_cast' => true,
     'no_singleline_whitespace_before_semicolons' => true,
@@ -89,9 +86,9 @@
     'normalize_index_brace' => true,
     'not_operator_with_successor_space' => true,
     'object_operator_without_whitespace' => true,
-    'ordered_imports' => ['sortAlgorithm' => 'alpha'],
+    'ordered_imports' => ['sort_algorithm' => 'alpha'],
     'phpdoc_indent' => true,
-    'phpdoc_inline_tag' => true,
+    'general_phpdoc_tag_rename' => true,
     'phpdoc_no_access' => true,
     'phpdoc_no_package' => true,
     'phpdoc_no_useless_inheritdoc' => true,
@@ -102,18 +99,18 @@
     'phpdoc_trim' => true,
     'phpdoc_types' => true,
     'phpdoc_var_without_name' => true,
-    'psr4' => true,
+    'psr_autoloading' => true,
     'self_accessor' => true,
     'short_scalar_cast' => true,
     'simplified_null_return' => false, // disabled by Shift
     'single_blank_line_at_eof' => true,
     'single_blank_line_before_namespace' => true,
     'single_class_element_per_statement' => true,
-    'single_import_per_statement' => true,
+    'single_import_per_statement' => false,
     'single_line_after_imports' => true,
     'no_unused_imports' => true,
     'single_line_comment_style' => [
-        'comment_types' => ['hash']
+        'comment_types' => ['hash'],
     ],
     'single_quote' => true,
     'space_after_semicolon' => true,
@@ -121,12 +118,9 @@
     'switch_case_semicolon_to_colon' => true,
     'switch_case_space' => true,
     'ternary_operator_spaces' => true,
-    'trailing_comma_in_multiline_array' => true,
+    'trailing_comma_in_multiline' => true,
     'trim_array_spaces' => true,
     'unary_operator_spaces' => true,
-    // 'visibility_required' => [
-    //     'elements' => ['method', 'property']
-    // ],
     'whitespace_after_comma_in_array' => true,
 ];
 
@@ -140,7 +134,7 @@
     ->ignoreDotFiles(true)
     ->ignoreVCS(true);
 
-return Config::create()
+return (new Config())
     ->setFinder($finder)
     ->setRules($rules)
     ->setRiskyAllowed(true)
diff --git a/check b/check
new file mode 100755
index 0000000..0e5c741
--- /dev/null
+++ b/check
@@ -0,0 +1,54 @@
+#!/bin/bash
+set -e
+
+offer_run() {
+    read -p "For more output, run $1. Run it now (Y/n)? " run
+
+    case ${run:0:1} in
+        n|N )
+            exit 1
+        ;;
+        * )
+            $1
+        ;;
+    esac
+
+    exit 1
+}
+
+if (php-cs-fixer fix --dry-run --config=.php-cs-fixer.php > /dev/null 2>/dev/null); then
+    echo '✅ php-cs-fixer OK'
+else
+    read -p "⚠️ php-cs-fixer found issues. Fix (Y/n)? " fix
+    case ${fix:0:1} in
+        n|N )
+            echo '❌ php-cs-fixer FAIL'
+            offer_run 'php-cs-fixer fix --config=.php-cs-fixer.php'
+        ;;
+        * )
+            if (php-cs-fixer fix --config=.php-cs-fixer.php > /dev/null 2>/dev/null); then
+                echo '✅ php-cs-fixer OK'
+            else
+                echo '❌ php-cs-fixer FAIL'
+                offer_run 'php-cs-fixer fix --config=.php-cs-fixer.php'
+            fi
+        ;;
+    esac
+fi
+
+if (./vendor/bin/phpstan analyse > /dev/null 2>/dev/null); then
+    echo '✅ PHPStan OK'
+else
+    echo '❌ PHPStan FAIL'
+    offer_run './vendor/bin/phpstan analyse'
+fi
+
+if (./vendor/bin/phpunit > /dev/null 2>/dev/null); then
+    echo '✅ PHPUnit OK'
+else
+    echo '❌ PHPUnit FAIL'
+    offer_run './vendor/bin/phpunit'
+fi
+
+echo '=================='
+echo '✅ Everything OK'
diff --git a/composer.json b/composer.json
index 4ecfc42..9de017e 100644
--- a/composer.json
+++ b/composer.json
@@ -16,12 +16,12 @@
         }
     },
     "require": {
-        "illuminate/translation": "^8.0||^6.0"
+        "illuminate/translation": "^6.0|^8.0|^9.0"
     },
     "require-dev": {
-        "orchestra/testbench": "^6.0||^4.0",
+        "orchestra/testbench": "^4.0|^6.0|^7.0",
         "phpunit/phpunit": "^9.5",
-        "nunomaduro/larastan": "^0.6.11"
+        "nunomaduro/larastan": "^1.0"
     },
     "extra": {
         "laravel": {
@@ -32,5 +32,7 @@
                 "Gloss": "Lean\\Gloss\\Gloss"
             }
         }
-    }
+    },
+    "minimum-stability": "dev",
+    "prefer-stable": true
 }
diff --git a/phpstan.neon b/phpstan.neon
index d4dc3dd..be7f931 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -13,7 +13,7 @@ parameters:
 
     ignoreErrors:
         -
-            message: '#has no return typehint specified#'
+            message: '#has no return type specified#'
             paths:
                 - tests/*
                 - src/GlossTranslator.php
@@ -22,11 +22,7 @@ parameters:
             paths:
                 - tests/*
         -
-            message: '#with no typehint specified#'
-            paths:
-                - src/GlossTranslator.php
-        -
-            message: '#of function str_replace expects#'
+            message: '#with no type specified#'
             paths:
                 - src/GlossTranslator.php
 
diff --git a/src/GlossTranslator.php b/src/GlossTranslator.php
index 375d9e1..c6fad4c 100644
--- a/src/GlossTranslator.php
+++ b/src/GlossTranslator.php
@@ -23,8 +23,6 @@ class GlossTranslator extends Translator
     /**
      * Register an override that returns a different key name.
      *
-     * @param string $shortKey
-     * @param string $newKey
      * @param array|null|callable $condition
      * @return void
      */
@@ -45,8 +43,6 @@ public function key(string $shortKey, string $newKey, $condition = null)
     /**
      * Register an override that returns a value.
      *
-     * @param string $shortKey
-     * @param string $value
      * @param array|null|callable $condition
      * @return void
      */
@@ -67,7 +63,6 @@ public function value(string $shortKey, string $value, $condition = null)
     /**
      * Register multiple value overrides.
      *
-     * @param array $values
      * @param array|null|callable $condition
      * @return void
      */
@@ -82,8 +77,6 @@ public function values(array $values, $condition = null)
     /**
      * Customize a translation string's value using a callback.
      *
-     * @param string $shortKey
-     * @param callable $value
      * @return void
      */
     public function extend(string $shortKey, callable $value)
@@ -95,7 +88,6 @@ public function extend(string $shortKey, callable $value)
      * Get a translation string.
      *
      * @param string $key
-     * @param array $replace
      * @param string|null $locale
      * @param bool $fallback
      * @return string
@@ -132,7 +124,6 @@ public function get($key, array $replace = [], $locale = null, $fallback = true)
     /**
      * Get a translation string and skip extensions.
      *
-     * @param string $key
      * @param array $replace
      * @param string|null $locale
      * @param bool $fallback
@@ -203,7 +194,9 @@ public function choice($key, $number, array $replace = [], $locale = null)
     protected function choiceWithoutExtensions($key, $number, array $replace = [], $locale = null)
     {
         $line = $this->getWithoutExtensions(
-            $key, $replace, $locale = $this->localeForChoice($locale)
+            $key,
+            $replace,
+            $locale = $this->localeForChoice($locale)
         );
 
         // If the given "number" is actually an array or countable we will simply count the
@@ -216,7 +209,8 @@ protected function choiceWithoutExtensions($key, $number, array $replace = [], $
         $replace['count'] = $number;
 
         return $this->makeReplacements(
-            $this->getSelector()->choose($line, $number, $locale), $replace
+            $this->getSelector()->choose($line, $number, $locale),
+            $replace
         );
     }
 
@@ -252,7 +246,6 @@ protected function makeReplacementsInArray(array $lines, array $replace): array
 
     /**
      * @param string|callable $line
-     * @param array $replace
      * @return string
      */
     protected function makeReplacements($line, array $replace)
diff --git a/src/helpers.php b/src/helpers.php
index d6d0133..4ab7870 100644
--- a/src/helpers.php
+++ b/src/helpers.php
@@ -10,7 +10,6 @@
      *
      * @param string|array|null $key
      * @param array|callable|null $replace
-     * @param string|null $locale
      * @return void|string|null|\Lean\Gloss\GlossTranslator
      */
     function gloss($key = null, $replace = null, string $locale = null)
@@ -36,8 +35,6 @@ function gloss($key = null, $replace = null, string $locale = null)
      * Resolve a translation string or Gloss instance.
      *
      * @param string|array|null $key
-     * @param array $replace
-     * @param string|null $locale
      * @return void|string|null|\Lean\Gloss\GlossTranslator
      */
     function ___($key = null, array $replace = [], string $locale = null)