diff --git a/DependencyInjection/GraphQLiteCompilerPass.php b/DependencyInjection/GraphQLiteCompilerPass.php
index e75c88c..16e85ad 100644
--- a/DependencyInjection/GraphQLiteCompilerPass.php
+++ b/DependencyInjection/GraphQLiteCompilerPass.php
@@ -428,9 +428,12 @@ private static function getParametersByName(ReflectionMethod $method): array
      */
     private function getAnnotationReader(): AnnotationReader
     {
-        if ($this->annotationReader === null) {
-            AnnotationRegistry::registerLoader('class_exists');
-
+        if ($this->annotationReader === null) {        
+            if (method_exists(AnnotationRegistry::class, 'registerUniqueLoader')) {
+                 AnnotationRegistry::registerUniqueLoader('class_exists');
+            } elseif (method_exists(AnnotationRegistry::class, 'registerLoader')) {
+                 AnnotationRegistry::registerLoader('class_exists');
+            }
             $doctrineAnnotationReader = new DoctrineAnnotationReader();
 
             if (ApcuAdapter::isSupported()) {