diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 5b0b2c7..d4a93e3 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -12,29 +12,7 @@ permissions:
 jobs:
   build:
     runs-on: ubuntu-latest
-
     steps:
       - uses: actions/checkout@v4
-
-      - name: Setup PHP
-        uses: shivammathur/setup-php@v2
-        with:
-          php-version: "8.3"
-
-      - name: Validate composer.json and composer.lock
-        run: composer validate --strict
-
-      - name: Cache Composer packages
-        id: composer-cache
-        uses: actions/cache@v3
-        with:
-          path: vendor
-          key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-php-
-
-      - name: Install dependencies
-        run: composer install --prefer-dist --no-progress
-
-      - name: Run tests
-        run: vendor/bin/phpunit
+      - uses: php-actions/composer@v6
+      - run: vendor/bin/phpunit
diff --git a/phpunit.xml b/phpunit.xml
new file mode 100644
index 0000000..f24b67b
--- /dev/null
+++ b/phpunit.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/11.0/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         colors="true">
+    <testsuites>
+        <testsuite name="Dumbo Test Suite">
+            <directory>tests</directory>
+        </testsuite>
+    </testsuites>
+</phpunit>