diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 1a14654..3d1d2ba 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: [7.4, 8.0, 8.1, 8.2]
+        php: [7.4, 8.0, 8.1, 8.2, 8.3]
         stability: ['prefer-stable']
 
     name: PHP ${{ matrix.php }} - ${{ matrix.stability }}
diff --git a/composer.json b/composer.json
index c5229d1..fa91e3c 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,7 @@
     "description": "Finds classes, interfaces, traits, and enums.",
     "type": "library",
     "require": {
-        "php": "~8.0.0 || ~8.1.0 || ~8.2.0 || ~7.4.0"
+        "php": "~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0 || ~7.4.0"
     },
     "require-dev": {
         "phpstan/phpstan": "^1.3",