diff --git a/composer.json b/composer.json
index 64549e07..a898a8a7 100644
--- a/composer.json
+++ b/composer.json
@@ -42,12 +42,11 @@
         "ext-pcre": "*",
         "ext-spl": "*",
 
-        "simplesamlphp/assert": "~1.8.1",
-        "simplesamlphp/composer-xmlprovider-installer": "~1.0.2",
-        "symfony/finder": "~6.4.0"
+        "simplesamlphp/assert": "~1.8.2",
+        "simplesamlphp/composer-xmlprovider-installer": "~1.0.2"
     },
     "require-dev": {
-        "simplesamlphp/simplesamlphp-test-framework": "~1.9.2"
+        "simplesamlphp/simplesamlphp-test-framework": "~1.9.3"
     },
     "support": {
         "issues": "https://github.com/simplesamlphp/xml-common/issues",
diff --git a/src/XML/Registry/ElementRegistry.php b/src/XML/Registry/ElementRegistry.php
index 93d0efb1..27c9a920 100644
--- a/src/XML/Registry/ElementRegistry.php
+++ b/src/XML/Registry/ElementRegistry.php
@@ -4,15 +4,16 @@
 
 namespace SimpleSAML\XML\Registry;
 
+use DirectoryIterator;
 use SimpleSAML\XML\AbstractElement;
 use SimpleSAML\XML\Assert\Assert;
 use SimpleSAML\XML\Exception\IOException;
 use SimpleSAML\XMLSchema\Exception\InvalidDOMElementException;
-use Symfony\Component\Finder\Finder;
 
 use function array_merge_recursive;
 use function dirname;
 use function file_exists;
+use function preg_match;
 
 final class ElementRegistry
 {
@@ -29,10 +30,12 @@ private function __construct()
         $classesDir = dirname(__FILE__, 6) . '/vendor/simplesamlphp/composer-xmlprovider-installer/classes';
 
         if (file_exists($classesDir) === true) {
-            $finder = Finder::create()->files()->name('element.registry.*.php')->in($classesDir);
-            if ($finder->hasResults()) {
-                foreach ($finder as $file) {
-                    $this->importFromFile($file->getPathName());
+            $directory = new DirectoryIterator($classesDir);
+            foreach ($directory as $fileInfo) {
+                if ($fileInfo->isFile()) {
+                    if (preg_match('/^element\.registry\.(.*)\.php$/', $fileInfo->getFilename())) {
+                        $this->importFromFile($fileInfo->getPathname());
+                    }
                 }
             }
         }