diff --git a/.github/workflows/analyzers.yaml b/.github/workflows/analyzers.yaml
index 3269e31..b67d45e 100644
--- a/.github/workflows/analyzers.yaml
+++ b/.github/workflows/analyzers.yaml
@@ -7,7 +7,7 @@ jobs:
         strategy:
             matrix:
                 operating-system: [ubuntu-latest]
-                php-versions: ['8.1', '8.2']
+                php-versions: ['8.1', '8.2', '8.3']
             fail-fast: false
         name: PHP ${{ matrix.php-versions }} @ ${{ matrix.operating-system }}
         steps:
diff --git a/.github/workflows/code-style.yaml b/.github/workflows/code-style.yaml
index 67f9f6f..089eaa5 100644
--- a/.github/workflows/code-style.yaml
+++ b/.github/workflows/code-style.yaml
@@ -7,7 +7,7 @@ jobs:
         strategy:
             matrix:
                 operating-system: [ubuntu-latest]
-                php-versions: ['8.1', '8.2']
+                php-versions: ['8.1', '8.2', '8.3']
             fail-fast: false
         name: PHP ${{ matrix.php-versions }} @ ${{ matrix.operating-system }}
         steps:
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 37f4910..7970d91 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -7,7 +7,7 @@ jobs:
         strategy:
             matrix:
                 operating-system: [ubuntu-latest]
-                php-versions: ['8.1', '8.2']
+                php-versions: ['8.1', '8.2', '8.3']
             fail-fast: false
         name: PHP ${{ matrix.php-versions }} @ ${{ matrix.operating-system }}
         steps:
diff --git a/.phive/phars.xml b/.phive/phars.xml
index 811a9d8..322a41f 100644
--- a/.phive/phars.xml
+++ b/.phive/phars.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phive xmlns="https://phar.io/phive">
-  <phar name="php-cs-fixer" version="^3.13.0" installed="3.13.0" location="./tools/php-cs-fixer.phar" copy="true"/>
+  <phar name="php-cs-fixer" version="^3.13.0" installed="3.39.0" location="./tools/php-cs-fixer.phar" copy="true"/>
 </phive>
diff --git a/composer.json b/composer.json
index 1559a02..49d34b1 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,7 @@
         }
     ],
     "require": {
-        "php": "~8.1.0 || ~8.2.0",
+        "php": "~8.1.0 || ~8.2.0 || ~8.3.0",
         "azjezz/psl": "^2.5"
     },
     "autoload-dev": {
diff --git a/tools/php-cs-fixer.phar b/tools/php-cs-fixer.phar
index 7912db6..9a03f3e 100755
Binary files a/tools/php-cs-fixer.phar and b/tools/php-cs-fixer.phar differ