diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 780fe24..de28d33 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,43 +15,8 @@ permissions:
 
 jobs:
   testsuite:
-    runs-on: ubuntu-22.04
-    strategy:
-      fail-fast: false
-      matrix:
-        php-version: ['8.1', '8.2', '8.3']
-        dependencies: ['highest']
-        include:
-          - php-version: '8.1'
-            dependencies: 'lowest'
-          - php-version: '8.4'
-            dependencies: 'highest'
-            composer-options: '--ignore-platform-req=php'
-
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Setup PHP
-        uses: shivammathur/setup-php@v2
-        with:
-          php-version: ${{ matrix.php-version }}
-          extensions: mbstring, intl
-          ini-values: zend.assertions=1
-          coverage: pcov
-
-      - name: Composer install
-        uses: ramsey/composer-install@v2
-        with:
-          dependency-versions: ${{ matrix.dependencies }}
-          composer-options: ${{ matrix.composer-options }}
-
-      - name: Run PHPUnit
-        run: |
-          if [[ ${{ matrix.php-version }} == '8.1' && ${{ matrix.dependencies }} == 'highest' ]]; then
-            vendor/bin/phpunit --display-deprecations --display-warnings --display-incomplete --display-skipped
-          else
-            vendor/bin/phpunit --display-deprecations --display-warnings
-          fi
+    uses: cakephp/.github/.github/workflows/testsuite-without-db.yml@5.x
+    secrets: inherit
 
   cs-stan:
     uses: cakephp/.github/.github/workflows/cs-stan.yml@5.x
diff --git a/.phive/phars.xml b/.phive/phars.xml
index e2bb653..f6cb5fe 100644
--- a/.phive/phars.xml
+++ b/.phive/phars.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phive xmlns="https://phar.io/phive">
-    <phar name="phpstan" version="2.0.1" installed="2.0.1" location="./tools/phpstan" copy="false"/>
+    <phar name="phpstan" version="2.1.0" installed="2.1.0" location="./tools/phpstan" copy="false"/>
     <phar name="psalm" version="5.26.1" installed="5.26.1" location="./tools/psalm" copy="false"/>
 </phive>
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 15b3fdd..ca04539 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -9,4 +9,10 @@
         </testsuite>
     </testsuites>
 
+    <source>
+        <include>
+            <directory suffix=".php">src/</directory>
+        </include>
+    </source>
+
 </phpunit>