diff --git a/src/ArrayTrait.php b/src/ArrayTrait.php
index d8768471..87f25f40 100755
--- a/src/ArrayTrait.php
+++ b/src/ArrayTrait.php
@@ -44,6 +44,7 @@ public function __unset($name) {
      * @param string $value
      * @ignore
      */
+    #[\ReturnTypeWillChange]
     public function offsetSet($offset, $value)
     {
 
@@ -58,6 +59,7 @@ public function offsetSet($offset, $value)
      * @return bool
      * @ignore
      */
+    #[\ReturnTypeWillChange]
     public function offsetExists($offset)
     {
         return is_callable([$this, 'get' . $offset]) ||
@@ -69,6 +71,7 @@ public function offsetExists($offset)
      * @param string $offset
      * @ignore
      */
+    #[\ReturnTypeWillChange]
     public function offsetUnset($offset)
     {
 
@@ -83,6 +86,7 @@ public function offsetUnset($offset)
      * @return mixed|null
      * @ignore
      */
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
 
diff --git a/src/Element.php b/src/Element.php
index 4983effd..8ac13e20 100755
--- a/src/Element.php
+++ b/src/Element.php
@@ -613,6 +613,7 @@ public function getAst()
      * @return stdClass
      * @ignore
      */
+    #[\ReturnTypeWillChange]
     public function jsonSerialize () {
 
         return $this->getAst();
diff --git a/src/Element/RuleList.php b/src/Element/RuleList.php
index 540e5bd6..08b35db6 100755
--- a/src/Element/RuleList.php
+++ b/src/Element/RuleList.php
@@ -281,6 +281,7 @@ public function remove(ElementInterface $element)
      * return an iterator of child nodes
      * @return ArrayIterator|Traversable
      */
+    #[\ReturnTypeWillChange]
     public function getIterator()
     {
 
diff --git a/src/Property/PropertyList.php b/src/Property/PropertyList.php
index d9fde4bf..f2be2f1b 100755
--- a/src/Property/PropertyList.php
+++ b/src/Property/PropertyList.php
@@ -360,6 +360,7 @@ public function isEmpty() {
     /**
      * @inheritDoc
      */
+    #[\ReturnTypeWillChange]
     public function getIterator()
     {
         return $this->getProperties();
diff --git a/src/Value.php b/src/Value.php
index c5050752..385ac0d4 100755
--- a/src/Value.php
+++ b/src/Value.php
@@ -1466,6 +1466,7 @@ public function __toString()
         return $this->render();
     }
 
+    #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return $this->render();