diff --git a/src/spec/Responses.php b/src/spec/Responses.php
index a3623ae..e293fa1 100644
--- a/src/spec/Responses.php
+++ b/src/spec/Responses.php
@@ -173,6 +173,7 @@ public function getErrors(): array
      * @return boolean true on success or false on failure.
      * The return value will be casted to boolean if non-boolean was returned.
      */
+    #[\ReturnTypeWillChange]
     public function offsetExists($offset)
     {
         return $this->hasResponse($offset);
@@ -184,6 +185,7 @@ public function offsetExists($offset)
      * @param mixed $offset The offset to retrieve.
      * @return mixed Can return all value types.
      */
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         return $this->getResponse($offset);
@@ -195,6 +197,7 @@ public function offsetGet($offset)
      * @param mixed $offset The offset to assign the value to.
      * @param mixed $value The value to set.
      */
+    #[\ReturnTypeWillChange]
     public function offsetSet($offset, $value)
     {
         $this->addResponse($offset, $value);
@@ -205,6 +208,7 @@ public function offsetSet($offset, $value)
      * @link http://php.net/manual/en/arrayaccess.offsetunset.php
      * @param mixed $offset The offset to unset.
      */
+    #[\ReturnTypeWillChange]
     public function offsetUnset($offset)
     {
         $this->removeResponse($offset);
@@ -216,6 +220,7 @@ public function offsetUnset($offset)
      * @return int The custom count as an integer.
      * The return value is cast to an integer.
      */
+    #[\ReturnTypeWillChange]
     public function count()
     {
         return count($this->_responses);
@@ -226,6 +231,7 @@ public function count()
      * @link http://php.net/manual/en/iteratoraggregate.getiterator.php
      * @return Traversable An instance of an object implementing <b>Iterator</b> or <b>Traversable</b>
      */
+    #[\ReturnTypeWillChange]
     public function getIterator()
     {
         return new ArrayIterator($this->_responses);