diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 02375f9..e1bcddb 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,9 +10,11 @@ on:
 jobs:
   test:
     runs-on: ubuntu-latest
+
     strategy:
       matrix:
-        php-versions: ['8.1', '8.2']
+        php-versions: ['8.1', '8.2', '8.3', '8.4', '8.5']
+
     steps:
       - uses: actions/checkout@v4
 
diff --git a/composer.json b/composer.json
index 643abf9..2e83db0 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,14 @@
     "homepage": "https://github.com/meyfa/phpunit-assert-gd",
     "type": "library",
     "description": "PHPUnit matcher/assertions for GD image resources",
-    "keywords": ["phpunit", "assert", "gd", "matcher", "image", "resource"],
+    "keywords": [
+        "phpunit",
+        "assert",
+        "gd",
+        "matcher",
+        "image",
+        "resource"
+    ],
     "license": "MIT",
     "authors": [
         {
@@ -13,7 +20,7 @@
     ],
     "require": {
         "php": ">=8.1",
-        "phpunit/phpunit": "^10.1|^11.0",
+        "phpunit/phpunit": "^10.1|^11.0|^12.5.12",
         "ext-gd": "*"
     },
     "require-dev": {