diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index a43689f..c52f017 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -10,7 +10,7 @@ jobs:
       max-parallel: 15
       matrix:
         dependencies: ['lowest', 'latest']
-        php-versions: ['7.3', '7.4', '8.0', '8.1', '8.2']
+        php-versions: ['7.3', '7.4', '8.0', '8.1', '8.2', '8.3']
     name: PHP ${{ matrix.php-versions }}, ${{ matrix.dependencies }} dependencies
     steps:
       - name: Checkout
diff --git a/composer.json b/composer.json
index 63a8724..f24a7f1 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,7 @@
         "phpcsstandards/php_codesniffer": "dev-master as 3.8.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.6.13"
+        "phpunit/phpunit": "^9.6.15"
     },
     "autoload": {
         "psr-4": {
diff --git a/composer.lock b/composer.lock
index 1248b74..b8b9cd5 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,34 +4,35 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "688a00da7f227cf8681394763605fcea",
+    "content-hash": "0fdd1b763ed86b629fc5d5404f2a6795",
     "packages": [
         {
             "name": "phpcsstandards/php_codesniffer",
-            "version": "dev-feature/pear-psr2-psr12-functioncallsignature-check-anon-classes",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHPCSStandards/PHP_CodeSniffer.git",
-                "reference": "d17d642dd19a76301cbeeef25126560b49f10b55"
+                "reference": "bc5d01137563c76e549a44120d7e062803f24396"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/PHPCSStandards/PHP_CodeSniffer/zipball/d17d642dd19a76301cbeeef25126560b49f10b55",
-                "reference": "d17d642dd19a76301cbeeef25126560b49f10b55",
+                "url": "https://api.github.com/repos/PHPCSStandards/PHP_CodeSniffer/zipball/bc5d01137563c76e549a44120d7e062803f24396",
+                "reference": "bc5d01137563c76e549a44120d7e062803f24396",
                 "shasum": ""
             },
             "require": {
                 "ext-simplexml": "*",
                 "ext-tokenizer": "*",
                 "ext-xmlwriter": "*",
-                "php": ">=7.2.0"
+                "php": ">=5.4.0"
             },
             "replace": {
                 "squizlabs/php_codesniffer": "> 2.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^8.0 || ^9.0"
+                "phpunit/phpunit": "^4.0 || ^5.0 || ^6.0 || ^7.0"
             },
+            "default-branch": true,
             "bin": [
                 "bin/phpcs",
                 "bin/phpcbf"
@@ -69,10 +70,11 @@
             ],
             "support": {
                 "issues": "https://github.com/PHPCSStandards/PHP_CodeSniffer/issues",
+                "security": "https://github.com/PHPCSStandards/PHP_CodeSniffer/security/policy",
                 "source": "https://github.com/PHPCSStandards/PHP_CodeSniffer",
                 "wiki": "https://github.com/PHPCSStandards/PHP_CodeSniffer/wiki"
             },
-            "time": "2023-11-09T16:27:24+00:00"
+            "time": "2023-11-21T23:24:24+00:00"
         }
     ],
     "packages-dev": [
@@ -693,16 +695,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "9.6.13",
+            "version": "9.6.15",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "f3d767f7f9e191eab4189abe41ab37797e30b1be"
+                "reference": "05017b80304e0eb3f31d90194a563fd53a6021f1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/f3d767f7f9e191eab4189abe41ab37797e30b1be",
-                "reference": "f3d767f7f9e191eab4189abe41ab37797e30b1be",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/05017b80304e0eb3f31d90194a563fd53a6021f1",
+                "reference": "05017b80304e0eb3f31d90194a563fd53a6021f1",
                 "shasum": ""
             },
             "require": {
@@ -776,7 +778,7 @@
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
                 "security": "https://github.com/sebastianbergmann/phpunit/security/policy",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.13"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.15"
             },
             "funding": [
                 {
@@ -792,7 +794,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-09-19T05:39:22+00:00"
+            "time": "2023-12-01T16:55:19+00:00"
         },
         {
             "name": "sebastian/cli-parser",
@@ -1760,16 +1762,16 @@
         },
         {
             "name": "theseer/tokenizer",
-            "version": "1.2.1",
+            "version": "1.2.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/theseer/tokenizer.git",
-                "reference": "34a41e998c2183e22995f158c581e7b5e755ab9e"
+                "reference": "b2ad5003ca10d4ee50a12da31de12a5774ba6b96"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/theseer/tokenizer/zipball/34a41e998c2183e22995f158c581e7b5e755ab9e",
-                "reference": "34a41e998c2183e22995f158c581e7b5e755ab9e",
+                "url": "https://api.github.com/repos/theseer/tokenizer/zipball/b2ad5003ca10d4ee50a12da31de12a5774ba6b96",
+                "reference": "b2ad5003ca10d4ee50a12da31de12a5774ba6b96",
                 "shasum": ""
             },
             "require": {
@@ -1798,7 +1800,7 @@
             "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"
+                "source": "https://github.com/theseer/tokenizer/tree/1.2.2"
             },
             "funding": [
                 {
@@ -1806,15 +1808,15 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-07-28T10:34:58+00:00"
+            "time": "2023-11-20T00:12:19+00:00"
         }
     ],
     "aliases": [
         {
             "package": "phpcsstandards/php_codesniffer",
-            "version": "dev-feature/pear-psr2-psr12-functioncallsignature-check-anon-classes",
-            "alias": "4.0.0",
-            "alias_normalized": "4.0.0.0"
+            "version": "9999999-dev",
+            "alias": "3.8.0",
+            "alias_normalized": "3.8.0.0"
         }
     ],
     "minimum-stability": "stable",