diff --git a/composer.json b/composer.json
index 393e035a0..f9166dc5d 100644
--- a/composer.json
+++ b/composer.json
@@ -48,7 +48,10 @@
     }
   },
   "config": {
-    "sort-packages": true
+    "sort-packages": true,
+    "allow-plugins": {
+      "php-http/discovery": true
+    }
   },
   "scripts": {
     "phpcs": [
diff --git a/src/Elasticsearch/Helper/Iterators/SearchHitIterator.php b/src/Elasticsearch/Helper/Iterators/SearchHitIterator.php
index 85c645e4c..6b50b6f45 100644
--- a/src/Elasticsearch/Helper/Iterators/SearchHitIterator.php
+++ b/src/Elasticsearch/Helper/Iterators/SearchHitIterator.php
@@ -69,6 +69,7 @@ public function __construct(SearchResponseIterator $search_responses)
      * @return void
      * @see    Iterator::rewind()
      */
+    #[\ReturnTypeWillChange]
     public function rewind()
     {
         $this->current_key = 0;
@@ -96,6 +97,7 @@ public function rewind()
      * @return void
      * @see    Iterator::next()
      */
+    #[\ReturnTypeWillChange]
     public function next()
     {
         $this->current_key++;
@@ -115,6 +117,7 @@ public function next()
      * @return bool
      * @see    Iterator::valid()
      */
+    #[\ReturnTypeWillChange]
     public function valid()
     {
         return is_array($this->current_hit_data);
@@ -126,6 +129,7 @@ public function valid()
      * @return array
      * @see    Iterator::current()
      */
+    #[\ReturnTypeWillChange]
     public function current()
     {
         return $this->current_hit_data;
@@ -137,6 +141,7 @@ public function current()
      * @return int
      * @see    Iterator::key()
      */
+    #[\ReturnTypeWillChange]
     public function key()
     {
         return $this->current_key;
@@ -161,6 +166,7 @@ private function readPageData()
     /**
      * {@inheritDoc}
      */
+    #[\ReturnTypeWillChange]
     public function count()
     {
         if ($this->count === null) {
diff --git a/src/Elasticsearch/Helper/Iterators/SearchResponseIterator.php b/src/Elasticsearch/Helper/Iterators/SearchResponseIterator.php
index 0f6d5ac87..09c5cc10e 100644
--- a/src/Elasticsearch/Helper/Iterators/SearchResponseIterator.php
+++ b/src/Elasticsearch/Helper/Iterators/SearchResponseIterator.php
@@ -123,6 +123,7 @@ private function clearScroll()
      * @return void
      * @see    Iterator::rewind()
      */
+    #[\ReturnTypeWillChange]
     public function rewind()
     {
         $this->clearScroll();
@@ -137,6 +138,7 @@ public function rewind()
      * @return void
      * @see    Iterator::next()
      */
+    #[\ReturnTypeWillChange]
     public function next()
     {
         $this->current_scrolled_response = $this->client->scroll([
@@ -153,6 +155,7 @@ public function next()
      * @return bool
      * @see    Iterator::valid()
      */
+    #[\ReturnTypeWillChange]
     public function valid()
     {
         return isset($this->current_scrolled_response['hits']['hits'][0]);
@@ -164,6 +167,7 @@ public function valid()
      * @return array
      * @see    Iterator::current()
      */
+    #[\ReturnTypeWillChange]
     public function current()
     {
         return $this->current_scrolled_response;
@@ -175,6 +179,7 @@ public function current()
      * @return int
      * @see    Iterator::key()
      */
+    #[\ReturnTypeWillChange]
     public function key()
     {
         return $this->current_key;
diff --git a/tests/Elasticsearch/Tests/Helper/Iterators/SearchHitIteratorTest.php b/tests/Elasticsearch/Tests/Helper/Iterators/SearchHitIteratorTest.php
index 80dcd2539..b669c7229 100644
--- a/tests/Elasticsearch/Tests/Helper/Iterators/SearchHitIteratorTest.php
+++ b/tests/Elasticsearch/Tests/Helper/Iterators/SearchHitIteratorTest.php
@@ -26,6 +26,7 @@
  * Class SearchResponseIteratorTest
  *
  */
+#[\AllowDynamicProperties]
 class SearchHitIteratorTest extends \PHPUnit\Framework\TestCase
 {
 
diff --git a/tests/Elasticsearch/Tests/TransportTest.php b/tests/Elasticsearch/Tests/TransportTest.php
index 84923c167..113f49fe2 100644
--- a/tests/Elasticsearch/Tests/TransportTest.php
+++ b/tests/Elasticsearch/Tests/TransportTest.php
@@ -29,6 +29,7 @@
 use Psr\Log\LoggerInterface;
 use React\Promise\Deferred;
 
+#[\AllowDynamicProperties]
 class TransportTest extends TestCase
 {
     public function setUp(): void