diff --git a/src/Account/Balance.php b/src/Account/Balance.php
index 05562028..e8d320b3 100644
--- a/src/Account/Balance.php
+++ b/src/Account/Balance.php
@@ -82,6 +82,7 @@ public function offsetExists($offset): bool
         return isset($this->data[$offset]);
     }
 
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         trigger_error(
diff --git a/src/Account/Config.php b/src/Account/Config.php
index 3f770e91..5a1546f7 100644
--- a/src/Account/Config.php
+++ b/src/Account/Config.php
@@ -142,6 +142,7 @@ public function offsetExists($offset): bool
         return isset($this->data[$offset]);
     }
 
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         trigger_error(
diff --git a/src/Account/Price.php b/src/Account/Price.php
index a8a4227f..f3bc5412 100644
--- a/src/Account/Price.php
+++ b/src/Account/Price.php
@@ -186,6 +186,7 @@ public function offsetExists($offset): bool
         return isset($this->data[$offset]);
     }
 
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         trigger_error(
diff --git a/src/Client/Credentials/AbstractCredentials.php b/src/Client/Credentials/AbstractCredentials.php
index 0d4cdd69..d1747e30 100644
--- a/src/Client/Credentials/AbstractCredentials.php
+++ b/src/Client/Credentials/AbstractCredentials.php
@@ -28,6 +28,7 @@ public function offsetExists($offset): bool
         return isset($this->credentials[$offset]);
     }
 
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         return $this->credentials[$offset];
diff --git a/src/Conversations/Conversation.php b/src/Conversations/Conversation.php
index e69c1dc4..24aef190 100644
--- a/src/Conversations/Conversation.php
+++ b/src/Conversations/Conversation.php
@@ -109,6 +109,7 @@ public function get(): Conversation
     /**
      * @return array|mixed
      */
+    #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return $this->data;
diff --git a/src/Entity/CollectionTrait.php b/src/Entity/CollectionTrait.php
index 873b5379..ca36fa3f 100644
--- a/src/Entity/CollectionTrait.php
+++ b/src/Entity/CollectionTrait.php
@@ -82,6 +82,7 @@ abstract public function hydrateEntity($data, $id);
     /**
      * Return the current item, expects concrete collection to handle creating the object.
      */
+    #[\ReturnTypeWillChange]
     public function current()
     {
         return $this->hydrateEntity($this->page['_embedded'][static::getCollectionName()][$this->current], $this->key());
@@ -100,6 +101,7 @@ public function next(): void
      *
      * @return string|int
      */
+    #[\ReturnTypeWillChange]
     public function key()
     {
         return
@@ -158,7 +160,8 @@ public function rewind(): void
 
     /**
      * Count of total items
-     */
+     */#
+    #[\ReturnTypeWillChange]
     public function count(): ?int
     {
         if (isset($this->page)) {
diff --git a/src/Entity/IterableAPICollection.php b/src/Entity/IterableAPICollection.php
index 0c5b674d..53d3de90 100644
--- a/src/Entity/IterableAPICollection.php
+++ b/src/Entity/IterableAPICollection.php
@@ -185,6 +185,7 @@ public function getResourceRoot(): array
      * @throws ClientException\Request
      * @throws ClientException\Server
      */
+    #[\ReturnTypeWillChange]
     public function current()
     {
         if (is_null($this->current)) {
@@ -207,6 +208,7 @@ public function next(): void
      *
      * @return string
      */
+    #[\ReturnTypeWillChange]
     public function key()
     {
         return
diff --git a/src/Entity/IterableServiceShimTrait.php b/src/Entity/IterableServiceShimTrait.php
index 30cc2e91..c6be0086 100644
--- a/src/Entity/IterableServiceShimTrait.php
+++ b/src/Entity/IterableServiceShimTrait.php
@@ -84,6 +84,7 @@ public function count(): int
      *
      * @deprecated This will be removed in a future release, and will be part of a search response
      */
+    #[\ReturnTypeWillChange]
     public function current()
     {
         if (is_null($this->collection)) {
@@ -114,6 +115,7 @@ public function next(): void
      *
      * @deprecated This will be removed in a future release, and will be part of a search response
      */
+    #[\ReturnTypeWillChange]
     public function key()
     {
         if (is_null($this->collection)) {
diff --git a/src/Insights/Basic.php b/src/Insights/Basic.php
index e6fd2761..6a0256cb 100644
--- a/src/Insights/Basic.php
+++ b/src/Insights/Basic.php
@@ -70,6 +70,7 @@ public function getCountryPrefix(): int
     /**
      * @return array|mixed
      */
+    #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return $this->toArray();
@@ -98,6 +99,7 @@ public function offsetExists($offset): bool
         return isset($this->data[$offset]);
     }
 
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         trigger_error(
diff --git a/src/Message/InboundMessage.php b/src/Message/InboundMessage.php
index 863a0d1c..ff548d6e 100644
--- a/src/Message/InboundMessage.php
+++ b/src/Message/InboundMessage.php
@@ -210,6 +210,7 @@ public function offsetExists($offset): bool
      *
      * @throws Exception
      */
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         trigger_error(
diff --git a/src/Message/Message.php b/src/Message/Message.php
index 9c78906b..8291c45e 100644
--- a/src/Message/Message.php
+++ b/src/Message/Message.php
@@ -397,6 +397,7 @@ public function offsetExists($offset): bool
      * @throws ClientException
      * @throws Exception
      */
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         trigger_error(
@@ -456,6 +457,7 @@ protected function getReadOnlyException($offset): RuntimeException
     /**
      * @throws Exception
      */
+    #[\ReturnTypeWillChange]
     public function current()
     {
         if (!isset($this->response)) {
@@ -471,6 +473,7 @@ public function next(): void
         $this->current++;
     }
 
+    #[\ReturnTypeWillChange]
     public function key()
     {
         if (!isset($this->response)) {
@@ -483,6 +486,7 @@ public function key()
     /**
      * @throws Exception
      */
+    #[\ReturnTypeWillChange]
     public function valid(): ?bool
     {
         if (!isset($this->response)) {
diff --git a/src/Numbers/Number.php b/src/Numbers/Number.php
index 2b4c16fb..8f6b5a8a 100644
--- a/src/Numbers/Number.php
+++ b/src/Numbers/Number.php
@@ -242,6 +242,7 @@ public function fromArray(array $data): void
     /**
      * @return array|mixed
      */
+    #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return $this->toArray();
diff --git a/src/SMS/Collection.php b/src/SMS/Collection.php
index 9cb2c6e2..018143a8 100644
--- a/src/SMS/Collection.php
+++ b/src/SMS/Collection.php
@@ -36,6 +36,7 @@ public function count(): int
         return (int)$this->data['message-count'];
     }
 
+    #[\ReturnTypeWillChange]
     public function current(): SentSMS
     {
         return new SentSMS($this->data['messages'][$this->current]);
@@ -44,6 +45,7 @@ public function current(): SentSMS
     /**
      * @return bool|float|int|string|null
      */
+    #[\ReturnTypeWillChange]
     public function key()
     {
         return $this->current;
diff --git a/src/User/User.php b/src/User/User.php
index 71ce6bbf..97224d65 100644
--- a/src/User/User.php
+++ b/src/User/User.php
@@ -117,6 +117,7 @@ public function getConversations()
     /**
      * @return array|mixed
      */
+    #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return $this->data;
diff --git a/src/Voice/NCCO/Action/Connect.php b/src/Voice/NCCO/Action/Connect.php
index dd794245..c977f004 100644
--- a/src/Voice/NCCO/Action/Connect.php
+++ b/src/Voice/NCCO/Action/Connect.php
@@ -77,6 +77,7 @@ public static function factory(EndpointInterface $endpoint, array $data = []): C
     /**
      * @return array|mixed
      */
+    #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
         return $this->toNCCOArray();