diff --git a/.github/workflows/diagnostics.yml b/.github/workflows/diagnostics.yml
index a865103..83318ed 100644
--- a/.github/workflows/diagnostics.yml
+++ b/.github/workflows/diagnostics.yml
@@ -15,17 +15,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        include:
-          - php: 7.4
-            output: '-o github-action -o default'
-            phpcq_install: 'install'
-          - php: 8.0
-            output: '-o default'
-            phpcq_install: 'update'
+        php: ['7.4', '8.0', '8.1', '8.2']
+        phpcq_install: ['update']
+        output: ['-o github-action -o default']
 
     steps:
       - name: Pull source
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Setup PHP with PECL extension
         uses: shivammathur/setup-php@v2
@@ -33,7 +29,7 @@ jobs:
           php-version: ${{ matrix.php }}
 
       - name: Cache composer cache directory
-        uses: actions/cache@v1
+        uses: actions/cache@v3
         env:
           cache-name: composer-cache-dir
         with:
@@ -41,7 +37,7 @@ jobs:
           key: ${{ runner.os }}-${{ matrix.php }}-build-${{ env.cache-name }}
 
       - name: Cache vendor directory
-        uses: actions/cache@v1
+        uses: actions/cache@v3
         env:
           cache-name: vendor
         with:
@@ -51,7 +47,7 @@ jobs:
             ${{ runner.os }}-${{ matrix.php }}-build-${{ env.cache-name }}-
 
       - name: Cache phpcq directory
-        uses: actions/cache@v1
+        uses: actions/cache@v3
         env:
           cache-name: phpcq
         with:
@@ -70,7 +66,7 @@ jobs:
         run: ./vendor/bin/phpcq run -v ${{ matrix.output }}
 
       - name: Upload build directory to artifact
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         if: ${{ success() }} || ${{ failure() }}
         with:
           name: phpcq-builds-php-${{ matrix.php }}
diff --git a/src/Contao/LangArrayTranslator.php b/src/Contao/LangArrayTranslator.php
index 9b859fb..95cfb19 100644
--- a/src/Contao/LangArrayTranslator.php
+++ b/src/Contao/LangArrayTranslator.php
@@ -3,7 +3,7 @@
 /**
  * This file is part of contao-community-alliance/translator.
  *
- * (c) 2013-2021 Contao Community Alliance.
+ * (c) 2013-2023 Contao Community Alliance.
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -14,7 +14,8 @@
  * @author     Christian Schiffler <c.schiffler@cyberspectrum.de>
  * @author     Tristan Lins <tristan.lins@bit3.de>
  * @author     Sven Baumann <baumann.sv@gmail.com>
- * @copyright  2013-2021 Contao Community Alliance.
+ * @author     Ingolf Steinhardt <info@e-spin.de>
+ * @copyright  2013-2023 Contao Community Alliance.
  * @license    https://github.com/contao-community-alliance/translator/blob/master/LICENSE LGPL-3.0
  * @filesource
  */
@@ -53,8 +54,13 @@ public function __construct(EventDispatcherInterface $eventDispatcher)
     }
 
     /**
-     * {@inheritDoc}
+     * Retrieve the value.
      *
+     * @param mixed       $string The string to translate.
+     * @param string|null $domain The domain to use.
+     * @param string|null $locale The locale (otherwise the current default locale will get used).
+     *
+     * @return array<string, string>|string
      * @SuppressWarnings(PHPMD.Superglobals)
      * @SuppressWarnings(PHPMD.CamelCaseVariableName)
      *
@@ -62,6 +68,13 @@ public function __construct(EventDispatcherInterface $eventDispatcher)
      */
     protected function getValue($string, $domain, $locale)
     {
+        if (false === \is_string($string)) {
+            // @codingStandardsIgnoreStart
+            @\trigger_error('Only string allowed to translate!', E_USER_DEPRECATED);
+            // @codingStandardsIgnoreEnd
+            return '';
+        }
+
         if (null === $domain) {
             $domain = 'default';
         }